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A car slowing down with friction on a horizontal floor. A free-body diagram for this situation looks like?
a satellite orbits earth at an altitude 356 kilometers above the planets surface. Compute for its (a) radius (b) speed (c) orbital period. (mE=5.97x10^24 kg)
a spring makes 10 vibrations in 5 seconds. Find the period and frequency of the vibration.
A boat moves at 10.00 m/s relative to the water. If the boat is in a river where the current is 2.00 m/s, how long
does it take the boat to make a complete round trip of 999 m upstream followed by another 999-m trip
downstream?
7.3 kg of copper sits at a temperature of 38 degrees F. How much heat is required to raise its temperature to 865 degrees F? The specific heat of copper is 385 J/kg- degree C. Submit your anwser in exponential form.
A box of mass 2.00kg is released from rest at the top of a plane inclined 15.3º above horizontal. The coefficient of kinetic friction is 0.22. What will be the speed of the mass after sliding 4.2 m along the plane? Round to the nearest hundredth.
Block A rests on top of block Bas shown in (Figure 1). The table is frictionless but there is friction (a horizontal force) between blocks A and B. Block B has mass 6.00 kg and block A has mass 2.00 kg. If the horizontal pull applied to block B equals 12.0 N, then block B has an acceleration of 1.80 m/s2
.
A racing car is traveling along a horizontal track. The car, starting from rest accelerates uniformly at 4.50ms-2 for 15s when it reaches maximum speed. It then travels at this speed for 20s before deceleration uniformly at 5.60ms-2 until it come to rest.
I. Determine the maximum speed reached by the car
Ii. Determine the distance travelled by the car before reaching maximum speed
iii. Determine the time taken for the car to decelerate form it’s maximum speed and comes to rest
iv. Determine the total distance travelled by the car
An aero plane is attempting to fly in a direction towards the east at a speed of 650kmh. A steady wind of speed of 90kmh is blowing from the north towards the south across the path of the aero plane. Determine the velocity of the plane with respect to the ground
10. Find the intensity of a magnetic field at a point 2 sm away from an infinitely long conductor which a current of 5 A flows through.
