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A double-decker bus is traveling at 10 m/s. A child in the bus throws a ball horizontally out of the window from a height of 5 m above ground level, with a velocity of 5 m/s in the direction perpendicular to the side of the bus. With what speed does the ball hit the ground (measured relative to the ground), in m/s?
A car is traveling at 10 m/s. How fast would the car need to go to double its kinetic energy? By what factor does the car's kinetic energy increase
A force F = ( 2 i + 2 j ) N acts on a particle that undergoes a displacement ?r = (-6 i - j ) m. Find the work done by the force on the particle
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface, assuming complete absorption? How does this pressure compare with the earth..
A 868 kg automobile is sliding on an icy street. It collides with a parked car which has a mass of 663 kg. The two cars lock up and slide together with a speed of 22.9 km/h. What was the speed of the first car just before the collision?
a 150 N sled is pulled up a 28 degree slope at a constant speed by a force of 100 N. What is the coefficient of kinetic friction between sled and slope
Two bodies of masses 20.1 kg and 14.6 kg move along the x-axis in opposite directions with velocities of 12.2 m/s -- positive x-direction and 10.9 m/s -- negative x-direction, respectively
An object placed 14.6 cm from a concave mirror produces a real image 7.90 cm from the mirror. where is the new image located as measured from the mirror
a metal rod is forced to move with constant velocity along two parallel metal rails, if the rails are separated by 35.3 cm and the speed of the rod is 45.7 cm/s, what is the magnitude of the emf generated in volts
A neutron of initial kinetic energy (Eini) scatters elastically from a target nucleus which is initiallt at rest. Find the maximum and average fractional kinetic energy loss F=1-(Efinal/Einitial)
An electrical load operates at 240 V rms. The load absorbs an average power of 8 kW at a lagging power factor of 0.8. Calculate the complex power of the load
Calculate the electric field intensity at a distance of 14 cm from the center of the shell
The square loop shown is made of wires with a total series resistance of 10 W. It is placed in a uniform 0.100-T magnetic field directed perpendicular into the plane of the paper.
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