4,347 Answered Questions for the topic Science

11/01/20

How can I solve this?
Starting from rest, a 62.0 kg woman jumps down to the floor from a height of 0.640 m, and immediately jumps back up into the air. While she is in contact with the ground during the time interval 0... more
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11/01/20

How can I solve this?
A ball falls from height of 19.5 m, hits the floor, and rebounds vertically upward to height of 15.0 m. Assume that m ball = 0.215 kg.(a)What is the impulse (in kg · m/s) delivered to the ball by... more
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11/01/20

How can I solve this?
At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 4.10 m/s. After 9.00 s have elapsed, the toboggan stops. Use a momentum approach to find the magnitude of... more
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10/30/20

What is the car's (centripetal) acceleration?
A race car rounds a curve at 53 m/s. The radius of the curve is 405 m, and the car's mass is 670 kg. (Assume the car's speed remains constant. Take the radially inward direction to be... more
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10/30/20

What is the radius of its orbit?
A centripetal force of 170 N acts on a 1,500-kg satellite moving with a speed of 4,700 m/s in a circular orbit around a planet. What is the radius of its orbit?
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Science Math Physics Algebra

10/29/20

What is the ball's centripetal acceleration?
A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.2 m long and the ball's speed is 16 m/s, what is the ball's centripetal acceleration?
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10/29/20

What is the slope?
A car is going 16 m/s for 15 s.What is the slope?
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10/29/20

Find its average speed.
A passenger jet flies from one airport to another 1,233 miles away in 2.2 h. Find its average speed.
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10/29/20

What is the period of the crystal's motion?
A quartz crystal vibrates with a frequency of 26,621 Hz. What is the period of the crystal's motion?
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10/29/20

What is the frequency (in Hz) of its oscillation?
A hypnotist's watch hanging from a chain swings back and forth every 0.68 s. What is the frequency (in Hz) of its oscillation?
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10/29/20

How does an inelastic collision between the wall and a spring (connected to a device) affect the spring constant?
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10/29/20

Block and ramp help
A block starts with a speed of 15 m/s at the bottom of a ramp that is inclined at an angle of 30 ̊ above the horizontal. The coefficient of kinetic friction between the block and the plan is 0.2.... more
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10/29/20

Roller coaster help
roller coaster has a mass of 840 kg. It is launched horizontally from a giant spring with spring constant 31,000 N/m into a frictionless vertical loop-the-loop track of radius 6.3 m. What is the... more
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10/29/20

Urgent help physics

You are driving your car uphill along a straight road. Suddenly you see a car run a red light and enter the intersection just ahead of you. You slam on your brakes and skid in a straight line to a... more
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Science Physics

10/29/20

How far does a car and a jet travel?
How far does a car going 23 m/s travel in 9 s? How far would a jet going 165 m/s travel in 9 s?
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Science Physics

10/29/20

A passenger jet flies from one airport to another 1,233 miles away in 2.2 h.
A passenger jet flies from one airport to another 1,233 miles away in 2.2 h. Find its average speed.
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10/29/20

What is the period of the crystal's motion?
A quartz crystal vibrates with a frequency of 26,621 Hz. What is the period of the crystal's motion?
Follows • 1
Expert Answers •1
Science Physics

10/29/20

What is the frequency (in Hz) of its oscillation?
A hypnotist's watch hanging from a chain swings back and forth every 0.68 s. What is the frequency (in Hz) of its oscillation?
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Expert Answers •1

10/29/20

Can someone please help me I'm stuck on this question?
A 1.20-kg object is held 1.00 m above a relaxed, massless vertical spring with a force constant of 315 N/m. The object is dropped onto the spring.(a) How far does the object compress the... more
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10/29/20

Can someone please help with my question?
A toy cannon uses a spring to project a 5.20-g soft rubber ball. The spring is originally compressed by 5.01 cm and has a force constant of 8.01 N/m. When the cannon is fired, the ball moves 15.9... more
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10/29/20

How can I solve this? Please Help!
Suppose your mass is 73.0 kg and you climb 40 stairs of height 18 cm in 18.0 s. What is your power output as you climb the stairs? _____ W
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10/29/20

How can I solve this question? Please Help?
A 40.5 kg box initially at rest is pushed 6.00 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300,... more
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10/29/20

How can I solve this please help?
A crate is given a push across a horizontal surface. The crate has a mass m, the push gives it an initial speed of 3.00 m/s, and the coefficient of kinetic friction between the crate and the... more
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10/29/20

How can I solve this please help?
A light, rigid rod is 65.2 cm long. Its top end is pivoted on a frictionless horizontal axle. The rod hangs straight down at rest with a small, massive ball attached to its bottom end. You strike... more
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10/29/20

How can I solve this please help?
A 19.0-kg cannonball is fired from a cannon with muzzle speed of 1 200 m/s at an angle of 38.0° with the horizontal. A second ball is fired with the same initial speed at an angle of 90.0°. Let y =... more
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