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A truck travels 40 meter in 8.5 second, while uniformly slowing down to a final speed of 2.8 m/s. Compute the original speed of the truck?
(in m/s)
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.947 rad/s. Calculate the total angular momentum of the system
Astronomers measure the width of the spectral lines of a star to be much wider than would be measured in a laboratory. Give two stellar characteristics that could produce this widening
Determine the plate scale and field-of-view for the 8192x8192 pixel MOSAIC imaging camera on the 4-m Mayall Telescope at Kitt Peak Observatory. MOSAIC is a prime focus instrument (f/2.95) and has 15µm pixels
An electromagnetic wave in a vacuum has an instantaneous magnetic field strength of 0.000000735 T at a certain point. What is the instantaneous electric field strength of the wave at this point
A 58-g handball moving with a speed of 5.3 m/s strikes the wall at an angle of 35° with the normal, and then bounces off with the same speed at the same angle with the normal. It is in contact with the wall for 2.0 ms. What is the average force exert..
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.555m from the axis of rotation of the stool. Compute the kinetic energy of the system before the dumbbells are pulled in
the sweep-second hand of a clock is 3.2 cm long. what are the magnitudes of a the magnitude of the average velocity
Liquid Sodium leaves a nuclear reactor at 800°C and is used as the energy source in a steam power plant. Determine the maximum thermal efficiency of the power plant
If a force of 300N is exerted upon a 60 kg mass for 3 seconds, how much impulse does the mass experience
The magnetic flux through one loop of wire is reduced from 0.35 Wbto 0.15 Wb in 0.2 sec. The average induced current in the coil is10 A. Can you determine the area of the loop from the data given?Explain. Find the resistance of the wire.
the driver of a 3000 lb car coasting down a hill sees a red light at the bottom and must stop. his speed when he
A flywheel having constant angular acceleration requires 4.40s to rotate through 169rad . Its angular velocity at the end of this time is 110rad/s. find the angular acceleration of the flywheel
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