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Physics Questions and Answers December 03, 2019

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A 6.60 kg watermelon is dropped from rest from the roof of an 18.0 m -tall building and feels no appreciable air resistance. Part A Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Express your answer with the appropriate units. Activate to select the appropriates template from the following

1 If u=(1,-2,1) and v=(3,1,-2), then uv=(3,5,6) Select one: True False Question 2 uv is parallel to both u and v Select one: True False Question 3 u and v are parallel iff uv=0 Select one: True False Question 4 You can find the area of the parallelgram having u and v as its sides using uv Select one: True False

What is the climb angle of an aircraft climbing at 1,550 feet per min at a true airspeed of 90 knots? Group of answer choices 9.8o 8.4o 7.9o 9.2o

Choose the correct answer An oil company evades environmental fines through court loopholes. This is consistent with pluralist theory on business power. True False

A woman with a mass of 61 kg is standing on a force plate while holding two 5 kg dumbbells (one in each hand). He performs a training exercise in which he: 1) begins holding the dumbbells in a standing position for 1 s, then 2) she steadily squats down over the course of 1 s, then 3) she remains in the squatting position for 1 s. She then

Which would be the most appropriate unit of weight for Morgan Freeman: gram, kilogram or metric ton? The most appropriate unit of weight for Morgan Freeman is a

All electrical energy used in an aircraft comes from two sources: chemical energy and magnetism. Group of answer choices True False

It's nighttime, and you've dropped your goggles into a 3.1-m-deep swimming pool. If you hold a laser pointer 1.1 m above the edge of the pool, you can illuminate the goggles if the laser beam enters the water 2.1 m from the edge. Part A How far horizontally are the goggles from the edge of the pool? Express your answer with the appropriate units.

What is the potential energy of the pendulum the moment it is released

Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their charges are equal, what is the ratio of the proton's mass to the electron's? (Note that since the charge-to-mass ratios are given to only three-digit accuracy, your answer may differ from the accepted ratio in the fourth dig

4.3* Find the total charge contained in a cone de- fined by R

What is the likely effect of wind on aircrafts that fly from east to west along the band of the jet streams in North America? Question 10 options: It diverts aircraft paths to the northern hemisphere. It moves dirt from the desert to the atmosphere. It diverts aircraft path to the southern hemisphere. It enhances aircraft movement by about 1 hour.

Could Newton's theory explain the orbit of all planets? Option A No, it could not explain Mercury's orbit, so an old theory was revived. Option B No, it could not explain Mercury's orbit, so a new theory was required. Option C Yes, and it is considered the end of all questions about planetary motion. Option D Yes, and modern investigations

What does high MA tell you about the force and motion of the limb

A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the time ttakeoff needed to take off? 26.8 s b. What is the speed vtakeoff of the plane as it takes off? Express your answer numerically in meters per second

What is the kinetic energy of the ball just after it bounces up

Here is a gas dryer valve circuit. You have a good 120 VAC power supply. What is the voltage drop across the four loads: 1. ignitor 2. booster coil 3. safety coil 4. main coil. I'm looking for four numbers here. THEN, for full credit, give a brief explanation of why you gave these answers. There is a 10 point deduction if no explanation is given.

Along which line must the support be directed at x=0

You drop a 0.5 kg ball from a height of 2 m, and it bounces back to a height of 1.5 m. Consider the system formed by the ball and the Earth, so we can speak properly of its gravitational potential energy

What type of energy is generated using Uranium? hydroelectric geothermal wind nuclear

the three major sources of naturally occurring background radiation are

The pressure required to inflate an alveolus is inversely related to: Question 19 options: wall thickness. surface tension. minute volume. alveolar radius

True or False: In the Room for the River Dutch Case Study video, one of the potential solutions to give the river more room, is to relocate dikes further inland to expand the floodplain? Question 15Answer True False

D What is one of the reasons effective SRHR approaches are not widely implement O a) Lack of knowledge O b) Cultural resistance c) Adequate funding O d) Government enthusiasm hp 14 a % 2 3 4 5 6 7 8 W E R T Y U

radiation doses that we receive from the environment we live in is

Two-Dimensional Motion Produced by the Physics Staff at Collin County Community College Copyright Collin College Physics Department. All Rights Reserved. University Physics, Exp 4: Two-Dimensional Motion Page 2 Purpose In Experiment 3 you explored the motion of an object when its displacement, velocity, and acceleration vectors were all in the

A factory worker pushes a 30.0 kg crate a distance of 5.1 m along a level floor at constant velocity by pushing downward at an angle of 30 below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Part A What magnitude of force must the worker apply to move the crate at constant velocity? Express your answer in

A box is sitting in the back of a truck and the truck is at rest. The truck begins to accelerate in the positive x direction, and the box does not slip at all, but instead accelerates with the truck at the same rate. What is the direction of friction acting on the box? positive x direction negative x direction there is no friction acting on the

IT TABLE 4. Data on the Velocity of the Ball and Height of the Building Trial Velocity, v(S) Height, h (m 2 Average Q2. What will happen to the ball's velocity as it falls farther below the point of release? The velocity will increases, because constant downward acceleration

The column below is made of 7075 Aluminum with elastic modulus= 71.7 GPawith a rectangular cross section. The cross section has dimensions= 80 mm and= 120 mm. The column has a length= 5 m.a)Calculateandfor the column's cross section.[10 points]??b)Calculate the critical buckling load for the column.[10 points]c)Without doing any calculations, what

Problem 3.20 Verify Stokes's theorem for the vector field B = (fcos + dsin) by evaluating: (a) f B- d over the path comprising a quarter section of a circle, as shown in the c figure, and (b) i (V x B) - ds over the surface of the quarter section. s J

Which force written as "agent on object" ("A on B") is the same force as the normal force on a box sitting on a table? F_table on box F_box on planet Earth F_Planet Earth on box F_gravity on box

Problem 3.21 Find the Laplacian of the following scalar functions: (a) Vi = 10r sin 20 (b) V2 = (2/R2 ) cos 0 sino

Dana has a sports medal suspended by a long ribbon from her rearview mirror. she accelerates onto the highway, she notices that the medal is hanging at an angle of 10 from the vertical. Part A Does the medal lean toward or away from the windshield? toward the windshield away from the windshield esc Submit Request Answer Part B What acceleration?

When a bar magnet is thrust into a coil of wire, the coil attracts the magnet as it enters. repels the magnet as it enters. both of these none of the above

A graph is presented below, representing an object's motion. A Speed versus Time graph is shown with y-axis labeled speed in centimeters per second up to 2 and x-axis labeled time in seconds up to 8. A horizontal line connects the points 0, 0 and 1, 0. A vertical line connect 1, 0 and 1, 1. A horizontal line connects 1, 1 and 4, 1. A vertical line

A wave has a period of 3.3 seconds. What is its frequency? 0.3 s 3.3 s 3.3 1/s 0.3 1/s

Consider a series RC circuit as in the figure below for which R = 9.00 M, C = 2.00 F, and e m f = 35.0 V. The circuit is a rectangular loop. The bottom side of the loop has a battery labeled emf , oriented with the positive terminal to the right of the negative terminal. The right side has a resistor R. The top side contains an open switch S. The

Convolve {(x-a/2) + (x+a/2)} with rect(x) for a=1/2, a=1, and a=2.

Homework Set 1 Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question 1) You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed 1) over the 12.0 km drive will be A) less than 70.0 km/h. B) greater than 70.0 km/h. C) exactly 38.0 km/h. D) equal to 70.0 km/h. E)

The application of an amount and/or frequency of force greater than required to compel compliance is known as ___________ force

Shown above are two identical bar magnets that are fixed in place with a proton moving to the right about to enter the region between these two magnets. Which statement below best describes what happens to the proton while travelling in between the magnets? a. It curves downward and strikes the bottom magnet b. The proton continues to move to the

If you need corrective glasses or contact lenses made, your optician must at some point use Question 12Select one: a. Kepler's Laws b. the law of reflection c. Snell's Law d. extramission theory

If initial angular velocity is 0o/s, which of the following situations would result in the greatest final angular velocity? (T = torque aplied; t = time that torque is applied; I = moment of inertia) T = 100Nm; t = 1s; I = 2kg*m2 T = 100Nm; t = 2s; I = 1kg*m2 T = 50Nm; t = 4s; I = 2kg*m2 T = 50Nm; t = 2s; I = 1kg*m2

How does nuclear fusion differ from nuclear fission? fission combines small nuclei, while fusion splits big nuclei fusion combines small nuclei, while fission splits big nuclei

A solenoid of length 0.250 m and radius 0.0250 m has 440 turns of wire. Determine the magnitude of the magnetic field at the center of the solenoid when it carries a current of 12.0 A. Question 9 options: 0.27 T 0.84 T 1.3 T 0.56 T

What do the values of s (coefficient of static friction) and k (coefficient of kinetic friction) depend upon? Hint: This type of friction model is called Coulomb Friction or Damping and the answer may be unintuitive so reading about this type of friction is recommended

30 points) Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW at 0.8 power factor lagging. Assume balanced operation. The line impedance is (1.4 + j1.6) per phase between generator G and the load, and (0.8 + j1) per phase between generator G and the load. If generator G supplies 15 kW at

A higher index of refraction causes the rays of light to bend more (going into and coming out of the lens). The rays therefore focus more quickly, and the focal length is shorter. If the surface of the lens where the ray enters is parallel to the surface where the ray exits, the ray will not be bent at all. The greater the angle between the two

Which type of stress is most common at divergent boundaries? Question 16 options: Compression Tension Elastic Brittle

An object moves clockwise along the trajectory below (top view shown, it is an oval not a 3D projection of a circle). The acceleration varies, but is always directed toward point K

D Question 20 Over 350 million women and men need treatment for one of the four curable STIs each year. O a) true O b) false . Previous ..' $7 18 144 4 101 5 12 # $ @ 3 4 5 E R T Y U W G H K S D F X C V B N M

Test all three types of water using the TDS meter by pressing the on/off button

Class Management | Help EXPERT a Conductors - Electric potential Begin Date: 9/11/2025 6:00:00 PM Due Date: 9/19/2025 11:59:00 PM End Date: 9/20/2025 11:00:00 PM Problem 10: (0% of Assignment Value) y-axis A rod of length L = 0.25 m is placed along the x-axis from x = 0 to x = L. The rod carries a uniform linear charge density of 1 = 1.995E-11

In scientific terms, is defined as a force per unit area pushing against a surface

Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the same Group of answer choices none of these all of these weight. mass. volume

How do you figure out when to use consevation of mechanical energy and conservation of momentum

Emergency responders for radioactive material incidents normally use the inverse square law of radiation to estimate the separation distance from the radioactive source. If a source has an intensity of 3.125 R/min at one foot from the source, solve for the distance in feet to the 5 mR/min boundary. Show your solution, including assumptions.

A 1.2-cm-tall object is 15 cm in front of a concave mirror that has a 62 cm focal length. Part A Calculate the position of the image. Express your answer with the appropriate units. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

19 (3 points) A CS amplifier has a load resistance of 10 k and RD = 820 . If gm = 500 mS , Vin = 500 mV, the output signal voltage is Question 19 options: 1.89 V 2.05 V 25 V 0.5 V Question 20 (3 points) If the barrier potential of a diode is exceeded, the forward current will Question 20 options: decrease not change increase Question 21 (3 points)

4.5* Find the total charge on a circular disk defined by r

Calculate the energy released by an electron inside of a hydrogen atom that transitions from an orbit that is n=4 to n=3

Suppose we have 102,400 atoms or a radioactive substance with a half-life of 12 minutes. Which of the following is correct ? How many atoms of that element remain after 1 hour 24 minutes? 8530 atoms 101,200 atoms 800 atoms 1000 atoms

he swing point was the same on the right and left side. After the pendulum picked upmomentum it would reach about 3-4 inches higher in the tested values. The shorter height ofrelease point did indeed induce a lower height in amplitude.The potential energy can never exceed the amount of energy. Therefore, there is a maximumelevation that the

Decide what units in both the English and metric systems would be a reasonable choice for describing the quantity. The height of an office building in Manhattan To describe the height of an office building in Manhattan, a reasonable choice of units would be in the English system and in the metric system

Describe how to get the shape from position A to position B in as few moves as possible

i need correct answer for this physics question. Dont give wrong answer Do not use AI 4-28. 4-29. 4-30. A maximum of 10 smokers are anticipated in a smoking room and each is expected to con- tribute about 150 g/min of environmental tobacco smoke (ETS) to the space. It is desired to hold the particulate level of ETS below 180 g/m? using filters

A power lifter with a body mass of 125 kg performs a "dead lift," raising a barbell with a mass of 400 kg to a height of 0.38 m in a time of 1.7 s. An Olympic weightlifter with a body mass of 82 kg performs a "power clean," lifting a barbell with a mass of 94 kg to a height of 0.89 m in a time of 0.85 s. Determine the mechanical work and power for

What is the primary use of copper in modern industry? Group of answer choices Jewelry Electrical transmission Construction Coinage

Which one is not a type of potential energy? Group of answer choices Gravitational Chemical Nuclear Artificial

Anwer it History Bookmarks Window Help . . . I

Home Work 3 Transformer 1. HW3_Q1 A single-phase distribution transformer supplies four houses. The maximum load is 12 kW at a power factor of 0.78 (lagging). The load voltage is 235 V. The transformer rating is 20 kVA, with a primary voltage of 7.2 kV, a secondary voltage of 240 V, and a leakage reactance of 12%. Calculate the transformer supply

Formula 1point Find the horizontal component of the 447 ft/sec vector P shown. Include the correct sign in your answer. Provide your answer in ft/sec and round to the nearest three decimal places. Upload your work in the following problem. P IN 3

A sinusoidal oscillator can be regarded as which of the following types of amplifiers

What does a waveform generator oscilloscope coupled to a laptop test, unlike a scan tool

What is the acceleration of a rock thrown straight upward on the way up? At the top of its flight? On the way down? Assume there is no air resistance. 23. When given the acceleration function, what additional information is needed to find the velocity function and position function

If two spaceships approach each other, each traveling at 0.5c relative to an outside observer, spaceship 1 will measure spaceship 2 to be traveling. much faster than c. at c. slightly faster than c. more slowly than c. In everyday experience, velocities simply add. As v nears c, things are different. A moving spaceship fires a 1 A ball thrown at

Seismic waves show a sudden increase at the Mohorovicic discontinuity because the (0.5pts) Question 17 - Seismic waves show a sudden increase at the Mohorovicic discontinuity because the mantle material is so much hotter than the crust. composition of minerals on both sides of the layer is different. mantle is so much thicker than the crustal

2.1 A negative point charge of 1C is situated in air at the origin of a rectangular coordinate system. A second negative point charge of 100C is situated on the positive X axis at the distance of 500mm from the origin. What is the force on the second charge? (3) 2.2 A -2.23C point charge is located 250mm from another charge + 4.45C point charge as

Mirrors, Lenses, & Polarization 2 Purpose refract light. To examine how different kinds of mirrors reflect light and how prisms and different kinds of lenses Equipment Ray box with plane/convex/concave mirror, convex lens, concave lens, prism Reading lamp Ruler Protractor Lens holder with 2 polarizers Lens holder with 1 polarizer Optical illusion

Multiple Choice Question Which of the following is the correct statement regarding an AC frequency of 50 Hz? Multiple choice question. It means that the current changes direction 50 times each second. It means that the AC current is equivalent to a 50-A DC. It means that the current changes direction 100 times each second. It means that the

Cooling water is pumped from a reservoir to equipment at a construction site through a 4- inch inner diameter aluminum pipe system, as shown below. The discharge pipe, 566 feet in length, is connected to a globe valve. Note that aluminum pipes have an average roughness similar to drawn tubing. The discharge pipe also includes 15 joints (each with

Which air induction system uses a wastegate? Option A fixed turbocharger Option B VGT Option C supercharger

from the book Jeppesen Guided Flight Discovery Multi-Engine, Chapter 1, Section B, Define accelerate-stop distance and describe its relevance to multi-engine operations

Alhazen (of present-day Iraq) demonstrated, over 1,000 years ago, that the key to forming a sharp image of an object in bright conditions projected onto a dark screen (whether inside a camera obscura or the human eye) is Question 5Select one: a. increasing the size of the 'screen' on to which the image is to be projected b. increasing the size of

Three-point charges located at points A, B, and C are positioned in a uniform electric field as shown figure 2.3 2.4.1 What is the potential difference between points A and B? (3) 2.4.2 Which point has higher potential, C or A? (3) 2.4.3 What happens to the electric potential energy if we move a charge from point A to point B

Solve the word problem using the given formulas. 1. Solve the word problem using the given formulas. A truck accelerates at a rate of 12 m/s. The truck weighs 16000 kg. What is the amount of force necessary for the truck to accelerate at this rate? 2. Solve the word problem using the given formulas. A car generates 3,000 N of force and weighs 2600

What type of device relies upon spring tension settings adjusted to a set pressure? Group of answer choices Pressure relief device Deluge system Explosion suppression system Flare

OBInPhys8 2.P.011. A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W = 739 N. (a) What is the person's mass? kg (b) The elevator accelerates upward momentarily at the rate of a = 4 m/s2. What does the scale read then? N (c) The elevator then moves with a steady speed of 4 m/s. What does the scale read

The Gulf Stream flows generally to the northeast offshore of the eastern seaboard of the United States. At a point where this current is flowing directly to the northeast at 1.8 m/s, it is approached by waves from the east having a period of 8 s and a height of 2.1 m. Assuming the ocean east of the Gulf Stream has a negligible current, what is the

15. Select the best answer. Newton's _____ law states that an object in motion will stay in motion, and an object at rest will stay at rest unless an unbalanced force acts on it. first third second 16. Select the best answer. A snail crawls 2 cm a second. This is a description of _____. momentum velocity acceleration speed 17. Select the best

the following: 1. Find the weight of an object with a mass of 100 kg. 2. Differentiate mass from weight. 3. If 202.5 g of mercury has a volume of 15 cubic cm, what is the density of mercury? 4. Differentiate volume from density. 5. Study the following notes im going to give you

Cooling water is pumped from a reservoir to equipment at a construction site through a 4-inch inner diameter aluminum pipe system, as shown below. The discharge pipe, 566 feet in length, is connected to a globe valve. Note that aluminum pipes have an average roughness similar to drawn tubing. The discharge pipe also includes 15 joints (each with a

1. Select the best answer. Newton's _____ law states that for every action there is an equal and opposite reaction. second first third 2. Select the best answer. Which of these forces is the weakest? weak nuclear gravitational electromagnetic strong nuclear 3. Choose the best answer based on the graph. At which segment did the car havegreatest

tell me Question 16 0.5 pts The Arab Spring resulted in leaders being removed from power in: O Tunisia. O All of the above. O Egypt. O Libya

how did stephen hawkings work infulence a feild of astromony anf out understanding of the unviverse simple

___________ capture solar energy and convert it directly to electrical current. Group of answer choices Nuclear Fission Photovoltaic Cells Concentrating Solar Power Joules

ith a b c or d The parent function f(x) = x" is reflected across the x-axis, vertically stretched by a factor of 5, and translated 3 units down to create g. Identify g in vertex form. O g(x) = -5x-+ 3 O g(x) = -5(x - 3)2 O g(x) = -5(x + 3)- O g(x) = -5x- - 3

What is the core building block of a watsonx Assistant application

Show the distance of a freely falling rock when it falls from rest for 3 s.

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