Friday
December 9, 2016

Homework Help: Science: Physics

Recent Homework Questions About Physics

Physics
A book of 10 newton is placed on the table. The force exerted by the surface of the table on the book will be?
Saturday, October 1, 2016 by Har!@#$%^&

physics
When an object is moving in a circle, but it is not held to the center by a tangible connection like a string, what provides the centripetal force? 1) some force such as friction or gravity. 2) the tendency for the object to move in a straight line. 3) centrifugal force. 4) ...
Saturday, October 1, 2016 by Elizabeth

Physics
A long, heavy rope hangs straight down from a high balcony on an apartment building. The lower end of the rope hangs about 1.0 m above the ground. If you grab onto the lower end and waggle it back and forth with constant frequency f, a wave travels up the rope. What would ...
Saturday, October 1, 2016 by Ck

Physics
What happens to centripetal force when speed decreases, in the special case that the object continues moving in a circle of the same radius? A) The radius cannot stay the same. B) The force also decreases. C) The force increases. D) Speed does not affect centripetal force. E) ...
Saturday, October 1, 2016 by Tom

Physics
Why does "banking" or (tilting) a turning road create centripetal force? A) Because banking the corner keeps car from going too fast. B) Because the angle of the roadway creates a centripetal force. C) Because the angle of the roadway helps cars counteract friction. ...
Saturday, October 1, 2016 by Tom

physics
A high-speed drill rotating ccw at 2300 rpm comes to a halt in 2.9 s .
Saturday, October 1, 2016 by Anonymous

Physics
A ball is raised to a height of 30.0m above the ground. What would its velocity be when it has fallen to a height of 15.0m above the ground. (You must solve this as a conservation of energy problem, and can do it in one step!) Any help would be appreciated..
Saturday, October 1, 2016 by Ben

Physics
Pool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in ...
Saturday, October 1, 2016 by Morgan

Physics
A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 104 m from the end of the barrel. The rifle is...
Saturday, October 1, 2016 by Morgan

Physics
A wave on a string is described by: y=(3.6cm)sin(2.7x−3.1t +0.97) where x is in meters, and t is in seconds, phase constant is in radians Consider a particle at x= 0.50m. After t = 0, how much time will pass before that particle first reaches its maximum transverse speed...
Saturday, October 1, 2016 by Cp

Physics
Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed you will experience a constant execrations. Suppose you drive through an entrance ramp at a modest acceleration 3.0 m/s^2. What will the acceleration be if you ...
Saturday, October 1, 2016 by Anonymous

Physics
A 24.5-kg child is 11.6 m from an 85.5-kg adult. Where is the center of mass of this system? Take the origin at the position of the child.
Saturday, October 1, 2016 by Plase help soon

Physics
When an item has been launched into orbit, what happens? 1: It continues to fall but its path never reaches the ground. 2: Centripetal force from Earth's gravity keeps it from being accelerated toward Earth. 3: It no longer falls because the weakness of Earth's gravity...
Saturday, October 1, 2016 by Beth

Physics
An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 7 s? Answer in units of m. plz help and explain
Saturday, October 1, 2016 by Jac

Physics
Please help..... When something is thrown over a large distance (on earth ) what new factor comes into play? 1- The decrease in gravity over long distance 2- The increase in gravity over long distance 3- The tendency of thrown objects to fall to the ground 4- The difference ...
Saturday, October 1, 2016 by Jessica

Physics
Two ants race across a table 76 cm long. One travels at 5.2 cm/s and the other at 2 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm. Can you teach me how to do this plz?
Saturday, October 1, 2016 by Jenn

Physics
A vector changes if 1. its direction changes. 2. Any of these 3. its magnitude changes. 4. its direction and magnitude both change. 5. None of these i know it is not 3 or 4. Please explain it to me
Saturday, October 1, 2016 by JIna

Physics
A 51kg person on a merry-go-round is traveling in a circle with a radius of 2 m at a speed of 6 m/s A) What acceleration does the person experience? B) What is the net horizontal force? C) How does it compare with the person's weight?
Saturday, October 1, 2016 by Sue

Physics
The motion of a wave traveling along a stretched string is described by the equation: y(x,t)=(2.4cm)sin(5.7x−14.0t) What is the minimum time it takes for a particle on the string to move from y= -2.4 cm to y = 2.4 cm? Can someone help me give some hints on how to do the ...
Saturday, October 1, 2016 by Pn

Physics
A biker traveling at 6m/s accelerates for 3 seconds at a rate of 3.4m/s2. How far did the biker travel while accelerating?
Friday, September 30, 2016 by Gus

physics
The propeller of a plane rotate clockwise at 26900 rpm. What is the angular acceleration (in rad/s2) of the propeller if it takes 8.00 s to come to a standstill?
Friday, September 30, 2016 by Anonymous

Physics
ool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which...
Friday, September 30, 2016 by Morgan

Physics
A net force is applied to an object, the same net force is then applied to a second object with 6.2 times the mass of the first then the acceleration of the second object will be how many times the acceleration of the first object?
Friday, September 30, 2016 by Mary

Physics
If a 350 kg object is moving with constant velocity 22 m/s due east then what is the magnitude of the net force acting on the object?
Friday, September 30, 2016 by Mary

Gyroscopes/Physics
Which of the following best describes the motion of a working gyroscope moving through space? a. the gyroscope both translates and rotates b. the gyroscope rotates, abut does not translate c. the gyroscope neither translates nor rotates d. the gyroscopes translates, but does ...
Friday, September 30, 2016 by MM

Physics
A skateboarder starts up a 1.0-m-high, 30∘ ramp at a speed of 7.2 m/s . The skateboard wheels roll without friction. At the top, she leaves the ramp and sails through the air. How far from the end of the ramp does the skateboarder touch down? Express your answer with the...
Friday, September 30, 2016 by Abby

Physics
A bicycle and rider travel along a road. Which of the following statements is true? a. Only the rider undergoes a translation. b. Only the bicycle undergoes translation. c. Neither the bicycle nor the rider undergoes a translation. D. The bicycle and rider undergo translation
Friday, September 30, 2016 by MM

Physics
A container of mass 0.3 kg slides along the ice with a speed of 4 m/s when it reaches a rough section where the coefficient of kinetic friction is 0.8. How long will it take the puck to stop sliding?
Friday, September 30, 2016 by Shawn

physics
Earth of mass 6×10^24 kg is in motion around the sun with a linear velocity of magnitude 30 km/s. a) Determine the magnitude of the linear momentum of the center of mass of Earth. b) Is this linear momentum conseved?
Friday, September 30, 2016 by angy

Physics
A rocket is fired vertically with an acceleration of 16m/s^2. After time T, the rocket's engine runs out of fuel and it begins to fall freely. The maximum height of the rocket is 940m, what is the minimum value of T?
Friday, September 30, 2016 by Liam

Physics
Two blocks are connected over a massless, frictionless pulley. The mass of block 2 is 8.00 kg, and the coefficient of kinetic friction between block 2 and the incline is 0.250. The angle θ of the incline is 28.0°. Block 2 slides down the incline at constant speed. ...
Friday, September 30, 2016 by Aron

Physics
A 1200 kg car rounds a curve of radius 71 m banked at an angle of 11°. What is the magnitude of the friction force required for the car to travel at 82 km/h? My physics optional extra work: This would be helpful so I can compare the solutions here as I do the work by myself.
Friday, September 30, 2016 by Ryan

Physics
A 0.79 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 29.0 cm long and has a tension of 29.7 N, and it makes an angle θ2 = 64.0° with the rod, while the lower string ...
Friday, September 30, 2016 by Ryan

Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. (b) What ...
Friday, September 30, 2016 by Ryan

Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. (a) Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed of a person situated at the equator. My ...
Friday, September 30, 2016 by Ryan

Physics
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 × 104 m/s, and the radius of the orbit is 5.80 × 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a ...
Friday, September 30, 2016 by Ryan

Physics
Tarzan plans to cross a gorge by swinging in an arc from a hanging vine (see Fig). If his arms are capable of exerting a force of 1200 N on the rope, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 84 kg and the vine is 4.8 m long. My ...
Friday, September 30, 2016 by Ryan

Physics
Speedboat (A) negotiates a curve whose radius is 115 m. Speedboat (B) negotiates a curve whose radius is 240 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats? My physics optional extra work: This would be helpful so...
Friday, September 30, 2016 by Ryan

Physics
A hockey puck of mass m = 70 g is attached to a string that passes through a hole in the center of a table, as shown in the figure below. The hockey puck moves in a circle of radius r = 1.20 m. Tied to the other end of the string, and hanging vertically beneath the table, is a...
Friday, September 30, 2016 by Ryan

Physics
My physics optional extra work: This would be helpful so I can compare the solutions here as I do the work by myself. Question: A car enters a circular flat curve with a radius of curvature of 0.20 km with a maximum speed of 135 km/h. If the friction between the road and the ...
Friday, September 30, 2016 by Ryan

Physics
A mop is pushed across the floor with a force F of 36.0 N at an angle of Θ = 50.0° (see figure below). The mass of the mop head is 3.75 kg. Calculate the acceleration of the mop head if the coefficient of kinetic friction between the head and the floor is μk= 0....
Friday, September 30, 2016 by Aron

Physics
Depth of water is 1000m.Density of water is 1000kg/m3.Calculate atmospheric pressure
Friday, September 30, 2016 by Dibyajyoti mohanty(balasore)

Physics
A hockey puck that has a mass of 170 g is tied to a light string and spun in a circle of radius 1.35 m (on frictionless ice). The string breaks under a tension that exceeds 5.00 N. What is the maximum speed of the puck without breaking the string? (Express your answer to three...
Friday, September 30, 2016 by Aron

physics
A cube of edge 2cm and mass 10g is placed on the surface of a table. What is the pressure exerted by the cube on the table.
Friday, September 30, 2016 by d.shashidhar

Physics
If 20 J of work is done in compressing a spring from 0 cm to 6 cm, then find the work done in compressing the same from 3 cm to 6 cm. My solution If 0.5kx^2= 20, & newx=0.5x, Should the work done be (0.5kx^2)/4=5 joules ? Pls explain. Thanks.
Friday, September 30, 2016 by Iype

Physics
Consider the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z = 2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies for these two species for certain values of ...
Friday, September 30, 2016 by Ellie

Physics
A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 5 excited state. The atom returns to the ground state by emitting two photons, one in dropping to n = 4 state, and one in further dropping to the ground state. What are the photon ...
Friday, September 30, 2016 by Ellie

Physics
Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy (1/2mv2) when a particle has a speed of (a) 2.60 × 10-3c. and (b) 0.972c
Friday, September 30, 2016 by Ellie

Physics
A carnot refrigerator uses an ideal carnot cycle to cool its interior. The outside air has a temp of 304K and the refrigerator is kept at a temp of 279K. 1) what is the coefficient of performance of this refrigerator? 2) if the refrigerator does 1500J of work on the working ...
Thursday, September 29, 2016 by physics struggles

Physics- displacement, velocity, etc.
25. Maria is standing at the edge of a cliff that is 10 m high over a canyon. She throws a rock upward off the side of the cliff. Right before the rock reaches the canyon floor, it has a speed of 25 m/s. a) What was the rock’s total displacement? 10 meters b) What was the...
Thursday, September 29, 2016 by MM

Physics
A carnot refrigerator uses an ideal carnot cycle to cool its interior. The outside air has a temp of 304K and the refrigerator is kept at a temp of 279K. 1) what is the coefficient of performance of this refrigerator? 2) if the refrigerator does 1500J of work on the working ...
Thursday, September 29, 2016 by physics struggles

Physics- Acceleration
A car starts at rest and accelerates at a constant rate for 12 seconds to a speed of 30 m/s. a) What is the acceleration? b) What is the total distance traveled in these 12 seconds?
Thursday, September 29, 2016 by MM

Physics
A wind turbine rotates at 8.40 rpm and has an angular acceleration of 0.0326 rad/s2. If the wind turbine takes 27.0 s to come to a complete stop, how many revolutions will this take?
Thursday, September 29, 2016 by Grace

Physics
A quarter on a spinning vinyl record has a centripetal acceleration of 31.8 m/s2. What is the acceleration of the quarter if it is placed twice as far from the centre of the vinyl record?
Thursday, September 29, 2016 by Grace

Physics
A neutron star has 12 km radius and rotation period 1.6 s. What's the centripetal acceleration on its surface at the equator?
Thursday, September 29, 2016 by Emma

Physics
A 96.4-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.86 m/s2, (b) moving upward at a constant speed
Thursday, September 29, 2016 by BrookeNeed

Physics
A woman stands on a scale in a moving elevator. Her mass is 65.0 kg, and the combined mass of the elevator and scale is an additional 757 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9550 N. What does ...
Thursday, September 29, 2016 by BrookeNeed

AP Physics 1
You exert a force of a known magnitude F on a grocery cart of total mass m. The force you exert on the cart points at an angle θ below the horizontal. If the cart starts at rest, determine an expression for the speed of the cart after it travels a distance d. Ignore ...
Thursday, September 29, 2016 by Max Pat

Grade 11 Physics
A stone is dropped from rest from a bridge that is 45 m above a river. A second stone is thrown down 1.o s after the first stone is dropped. The two stones strike the water simultaneously. What was the initial velocity of the second stone?
Thursday, September 29, 2016 by Cass

physics
The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force that the sun exerts on the moon is perpendicular to the force that the earth exerts on the moon. The masses are: mass of sun=1.99 × 1030 kg, mass of earth=5.98 × ...
Thursday, September 29, 2016 by BrookeNeed

Physics- Velocity, Displacement, etc.
A child boards a bus for summer camp. His mom is waiting next to the bus. The bus begins moving 3 m/s east with respect to the ground. The child is walking 0.5 m/s west towards the back of the bus with respect to the bus. The mother begins running 1 m/s east with respect to ...
Thursday, September 29, 2016 by MM

Physics
A river has a current of 4 m/s south with respect to the shore. A swimmer is swimming in the river (which is redundant). a. If the swimmer is swimming 2 m/s north with respect to the water, what is his velocity relative to the shore? b. If the swimmer is swimming 3 m/s south ...
Thursday, September 29, 2016 by MM

Physics
An object is thrown at 30 m/s and at a 40 degree angle. What is the range of the object, given that the ground is horizontal and flat? I'm not sure whether to use (vi^2sin2x)/g or x = Vh*t.
Thursday, September 29, 2016 by Anonymous

Physics
A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?
Thursday, September 29, 2016 by Jordan

Physics
a block of mass 10kg is kept on ground. a vertically upward force F=(20t)N starts acting at t=0. the height of the block from the ground at t=10s is
Thursday, September 29, 2016 by Vinaesh

Physics
A lamp of mass 5kg is hung from two hooks 2.5cm apart on the horizontal ceiling of room by strings of length 1.5m and 2m.Find tension in the strings?
Thursday, September 29, 2016 by Prasad

physics
A 300g lead is heated to 95celsius and is then dropped into 100g of water at 10celsius. If the final temperature is 15celsius. What is the specific heat of the lead?
Thursday, September 29, 2016 by bits

physics
A 500g copper at 100celsius is placed in a 200g water at 25celsius which is contained in an aluminum calorimeter that has a mass of 400g. If the final temperature of the whole system is 30celsius, find the specific heat of the lead.
Thursday, September 29, 2016 by bits

Physics
A cheetah can run approximately 100 km/hr and a gazelle at 80.0 km/hr. If both animals are running at full speed, with the gazelle 70.0 m ahead, how long before the cheetah catches its prey?
Thursday, September 29, 2016 by Tiffany

physics
A horse is running across a field. The horse accelerates at 8.00 m/s2 over a distance of 9.70 m. It runs until its speed is 23.4 m/s and continues at this speed. What was the horse's initial speed?
Wednesday, September 28, 2016 by lilly

physics
A baseball player standing on the ground throws a ball straight up. The ball leaves the player's hand with a speed of 6.22 m/s and is in the air for 2.70 s before hitting the ground. How high above the ground was the baseball player's hand when he released the ball?
Wednesday, September 28, 2016 by lilly

physics
A neutron star has 10 km radius and rotation period 1.2 s What's the centripetal acceleration on its surface at the equator?
Wednesday, September 28, 2016 by britt

Physics
A box slides down an inclined plane with an acceleration that is precisely two-thirds what it would have been if the slide had been frictionless. Calculate the angle of the incline if the coefficient of kinetic friction of the rough incline is 0.29 I know I have to use ...
Wednesday, September 28, 2016 by Bex

Physics
Explain why, when a polythene rod which has been rubbed with any cloth is held high above small pieces of paper on a table, the pieces of paper jump up and down repeatedly between the table and rod.
Wednesday, September 28, 2016 by Jennifer Martins

Physics
A wooden block of mass 9 kg is at rest on an inclined plane sloped at an angle theta from the horizontal. The block is located 5 m from the bottom of the plane. A) Find the frictional force for theta = 20 B)If the angle is increased slowly the block starts sliding at an angle ...
Wednesday, September 28, 2016 by Olivia

Physics
During an auto race, a car with a speed of 85m/s acceleration passed another car rate of 4.0m/s^2 for 3.5s. How far does the car travel during this time? Okay so I used D= Vi-t+(1/2)t^2 D= 85m-4.0m/s^2+(1/2)3.5^2 D= 87.125 ?
Wednesday, September 28, 2016 by Math CAN Y0U CHECK MY WORK?

Physics
A soccer ball accelerates from rest and rolls 6.5 m down a hill in 3.1 s. It then bumps into a tree. What is the speed of the ball just before it hits the tree? A formula to answer this question would be fine; you don't have to solve the whole thing.
Wednesday, September 28, 2016 by Heather

physics
A woman stands on a scale in a moving elevator. Her mass is 65.0 kg, and the combined mass of the elevator and scale is an additional 757 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9550 N. What does ...
Wednesday, September 28, 2016 by BrookeNeed

Physics
Mass is measured in grams, acceleration is measured in meters per second squared, and distance is measured in meters. Force is equal to mass times accelaration, and work is equal to force times distance. What is the unit of work?
Wednesday, September 28, 2016 by Jay

Physics
A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.410 . Suddenly, the plane accelerates forward, its altitude remaining constant. What is the maximum ...
Wednesday, September 28, 2016 by BrookeNeed

Physics
A 8.06-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.402. Determine the kinetic frictional force that acts on the box when the elevator is (a) accelerating upward with an acceleration whose ...
Wednesday, September 28, 2016 by BrookeNeed

physics
Find the gravitational acceleration if a spaceship at a distance equal to double of earth's radius from the center of the earth (g on earth is 9.8 m/s^2)
Wednesday, September 28, 2016 by pruthviraj

PHYSICS PLEASE HELP
Find the electric field on the axis of a uniformly charged solid cylinder, at a  distance z from the center of the cylinder. The length of the cylinder is H, its  radius is “a”, and the charge density is ρ. (Assume that z > H/2).
Wednesday, September 28, 2016 by Julie

Physics
An arrow is shot with a velocity of 30 m/s at an angle 37° above the horizontal. It is initially 2 meters above the ground and 15 meters from a wall. T what height does it hit the wall? Is it still going up just before it hits or is it already on its way down?
Wednesday, September 28, 2016 by Shyne Fornea

Physics - EMERGENCY PLEASE HELP
At a Grand Prix, drivers sustain lateral accelerations (sideways) about five times the acceleration due to gravity while driving around curves at speeds of 288 km/h. Assuming a circular curve, find the radius of that section of the track.
Wednesday, September 28, 2016 by Ot

Physics
A Sunway train starts from rest at a station and accelerates at a rate of 2.0 ms^-2 for 10 s. It runs for constant speed for 50 s and slows down at a rate of 3.5 ms^-2 until it stops at the next station. Find the total distance covered Draw the velocity vs time graph for the ...
Wednesday, September 28, 2016 by Molly

physics
A 300g lead is heated to 95celsius and is then dropped into 100g of water at 10celsius. If the final temperature is 15celsius. What is the specific heat of the lead?
Wednesday, September 28, 2016 by bits

physics
A steam boiler is made of steel and weighs 900lb. The boiler contains 400lb of water. How many Btu are required to raise the temperature of each from 42fahrenheit to 212fahrenheit? specific heat of steel = 0.11
Wednesday, September 28, 2016 by bits

physics
How much heat does 25g aluminum give off as it cools from 95celsius to 30celsius?
Wednesday, September 28, 2016 by bits

physics
How much heat is needed to raise the temperature of 0.800kg ethyl alcohol from 15celsius to its boiling point at 78.3celsius?
Wednesday, September 28, 2016 by bits

physics
How many calories are required to heat 100grams of copper from 10celsius to 100celsius? The specific heat of copper is 0.093cal/g celsius.
Wednesday, September 28, 2016 by bits

physics
How much heat is needed to raise the temperature of 2kg of water to 10K?
Wednesday, September 28, 2016 by bits

Physics
Figure shows a circular wire loop of radius r carrying current i placed in a perpendicular magnetic field B. Suppose that the radius of cross section of the wire is a. Find the decrease in radius of loop when magnetic field is switched off if Young’s modulus is Y.
Wednesday, September 28, 2016 by Aaron

physics
A baseball thrown at an angle of 45 degrees above the horizontal strikes a building 18 m away at a point 8 m above the point it is thrown. Find the time taken by the ball to hit the building. Please show me how to set the problem up.
Tuesday, September 27, 2016 by tanner

Physics
You push a skateboard so that it rolls down the road at a speed of 1.30 m/s. You run after the skateboard at a speed of 4.00 m/s and while still behind the skateboard you jump off the ground at an angle of 33.0° above the horizontal hoping to land on the skateboard. How ...
Tuesday, September 27, 2016 by Emma

Physics
You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 25.6 m/s at an angle of 56.0° above the horizontal. If it hits the top of the wall at a speed of 15.3 m/s, how high is the wall?
Tuesday, September 27, 2016 by Freya

physics
A conveyor belt is moving grain into a bin that is 1.90 m below the top of the conveyor belt. The grain does not slip on the conveyor belt that is inclined at 15.0° and they move at a constant speed of 6.00 m/s. In order for the conveyor belt to get the grain into the bin...
Tuesday, September 27, 2016 by Anonymous

physics
A bike wheel is spun until it reaches an angular velocity of 0.200 rad/s. It was spun for 0.720 s. What was its change in angle during this time if it started from rest?
Tuesday, September 27, 2016 by jasmine

physics
A ferris wheel bucket travels around at 3.40 m/s. The radius of the ferris wheel is 39.8 m. What is the ferris wheel's angular velocity?
Tuesday, September 27, 2016 by jasmine

physics
An airplane is flying above the Earth's surface at a height of 10.5 km. The centripetal acceleration of the plane is 16.4 m/s2. What is the angular velocity of the plane moving in uniform circular motion? Take the radius of the earth to be 6400 km.
Tuesday, September 27, 2016 by jasmine

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