What is the childs speed three-quarters of the way down

Assignment Help Physics
Reference no: EM13663447

A student throws a 0.140kg ball straight upwards to a height of 7.20 m. How much work did the student do? _______ J

A 33.8 kg child starting from rest slides down a water slide with a vertical height of 20.2 m.

1) What is the child's speed halfway down the slide's vertical distance? ___m/s

2) What is the child's speed three-quarters of the way down? ____m/s

How much longer must the minimum length of a plane mirror before a 6 ft 1 in man to see his complete head-to-toe image than for 5ft 5 in woman to do so? ____in

Reference no: EM13663447

Questions Cloud

Extremely thin film of soapy water-what is thickness of film : An extremely thin film of soapy water (n = 1.26) sits on top of a flat glass plate with n =1.51.  The soap film has a red color when viewed at normal incidence.  What is the thickness of the film?  (Wavelength of red, or lambda = 640nm.)
Solid sphere of uniform density has a mass : A solid sphere of uniform density has a mass of 9.0 ×104 kg and a radius of 2.7 m. What is the magnitude of the gravitational force due to the sphere on a particle of mass 9.6 kg located at a distance of (a) 8.1 m and (b) 1.2 m from the center of the..
What is the oscillation amplitude : A mass on a spring has an angular oscillation frequency of 2.56rad/s. The spring constant is 27.2 N/m, and the system's kinetic energy is 4.47J when t = 1.56 s. Suppose that φ = 0.00. What is the oscillation amplitude?
What is the charge in electrical potential energy : A proton moves 68 cm on a path parallel to the direction of a uniform electric field of strength 2.8 N/C. What is the charge in electrical potential energy?
What is the childs speed three-quarters of the way down : A student throws a 0.140kg ball straight upwards to a height of 7.20 m. How much work did the student do? A 33.8 kg child starting from rest slides down a water slide with a vertical height of 20.2 m. What is the child's speed three-quarters of the w..
Assume the transformers are efficient : 65kW is to arrive at a town over two 0.100-Ω lines. Estimate how much power is saved if the voltage is stepped up from 120V to 1200V and then down again, rather than simply transmitting at 120V. Assume the transformers are 99% efficient.
What is the speed of the recoil electron after the collision : A photon of wavelength 0.73130 nm strikes a free electron that is initially at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision?
Discover the time it takes the stone to catch up with ball : A ball is thrown vertically upward by an initial speed of 11 m/s. One second later, a stone is thrown vertically upward with an initial speed of 25 m/s. Discover the time it takes the stone to catch up with the ball.
What is the maximum number of lines per cm for the grating : Two ( and only two ) full spectral orders can be seen on either side of the central maximum when white light is sent during a diffraction grating. What is the maximum number of lines per cm for the grating?

Reviews

Write a Review

Physics Questions & Answers

  Find the energy consumed in a year

A 4-W night-light is plugge into a 120-V circuit and operatescontinuously for 1 year. Find the energy consumed in a year

  Find non-zero christoffel symbols and the equations

find the non-zero Christoffel symbols and the equations, of the geodesic, for the two dimensional case of move-ment on the surface of a cylinder of radius and show that the transformation is an invariance transformation by finding the function A

  Evaluate the maximum height reached by the rocket

A rocket accelerates upwards from rest at 20 m/for 4 seconds then its engine shuts off. find the maximum height reached by the rocket

  What is the direction of the balls displacement

A ball rolling on a table has a velocity with rectangular components vx = 0.50m/s and vy = 0.60m/s. What is the direction of the balls displacement

  How fast was the drunk going just before the collision

A drunk driver in a 2300kg car plows into a 2100kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 20m before stopping. If the effective coefficient of friction is 0.68, how fast was the drunk goi..

  Find the normal force exerted on the crate by the elevator

Find out the normal force exerted on the crate by the elevator.

  Find what is the temperature at the midpoint

A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. What is the temperature at the midpoint where the rods are joined together

  Estimate what force is exerted on this segment of wire

If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.95 T field (perpendicular to the wire), what force is exerted on this segment of wire

  Evaluate what is the frequency

If the displacement of a harmonic oscillator is given by y= 3.5 sin(10t), where the units of y are meters and t is measured in sec. Evaluate what is the frequency

  What is the mass of the heaviest rock

One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat

  A lens with a focal length of 15cm is placed 50cm in front

a lens with a focal length of 15cm is placed 50cm in front of a lens with a focal length of 5cm. how far from the

  What is the average mechanical power output of the engine

A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 12.0 s. Ignore air resistance. What is the average mechanical power output of the engine

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd