Physics Force & Laws Of Motion Level: Misc Level
A 300g baseball traveling at 30 m/s is truck by a bat in the direction from which it came at 40 m/s find the impulse of the force on the baseball.
Physics Properties Of Matter Level: Misc Level
A force of 1.0 x 103 N is applied to a steel rod of length 1 m and a circular cross section of area 10 cm2: Find the elongation of rod.Young,s modulus for steel are 2.0 x1011Pa.
Physics Circular Motion Level: Misc Level
An angular acceleration of 1200 rev/min2 when expressed in radians/s2 is ?
Physics Properties Of Matter Level: Misc Level
Water is pumped through a pipe to a tank at the top of a building. The pressure of the water at ground level is 2.2x105 Pa and at the tank.the pressure is atmospheric. If the diameter of the pipe is the same throughout, find the height at which the tank is located. Atmospheric pressure may be assumed as 1.0 x105 Pa and g as 9.8 m/s2.
Physics Rotational Mechanics Level: Misc Level
If a solid cylinder , a hoop, and a solid sphere of the same mass are rolled down simultaneously from the same height on an inclined plane. In which order will the object reach the bottom of the incline.
Physics Rotational Mechanics Level: Misc Level
A unifrom solid sphere of mass 5 kg and radius 30 cm is rotating about an axis through its center at the rate of 180 rev/min. Find the kinetic energy of the sphere. The rotational inertia of a unifrom sphere is 2/5 mr2
Physics Rotational Mechanics Level: Misc Level
The crankshaft of an engine is accelerated from rest at the uniform rate of 4.0rad/s2 for 30s. Find the rotational speed of the crankshaft at the end of 30s in eev/min.
Physics Force & Laws Of Motion Level: Misc Level
An object with a mass of 2 kg traveling with a velocity of 3 m/s collides head- on and elastically with a stationary object of mass 0.5 kg. The velocity of the 2 kg mass after the collision is?
Physics Properties Of Matter Level: Misc Level
A log of wood is floating in water with 40% of it volume above the surface of the water. If the volume of the log is 0.4 m3, find the mass of the log.
Physics Force & Laws Of Motion Level: Misc Level
A 200 g ball hits a wall perpendicularly with a velocity of 30 m/s and rebounds back perpendicularly with a velocity of 20 m/s. If the collision last for 5 milliseconds. Find the average force exerted by the ball on the wall.
Physics Properties Of Matter Level: Misc Level
The gauge pressure at a depth of 17 m in Water is equal to?
Physics Rotational Mechanics Level: Misc Level
A disk with a mass of 50 kg and radius 0.40 m is rotated about its axis by a motor. The disk starts from rest and rotates at 120 rev/min in 10 s. Find the torque, assuming it to be a constant.
Physics Force & Laws Of Motion Level: Misc Level
The Artic Snow Train has a mass of 4.00 x 10 to the 5 th power kg and a top speed of 32.0 km/hr. Suppose such a train moving at top speed is hit from behind by another snow train with a mass of 1.60 x10 to the 5 th power kg and a speed of 45.0 km/hr in the same direction. what velocity of the two trains if they move off together after the collision?
Physics Force & Laws Of Motion Level: Misc Level
An English Mastiff with a mass of 155 kg jumps forward horizontally at a speed of 6.0 m/s into a boat floating at rest. After the jump, the boat and the dog move with a velocity of 2.2 m/s forward . Calculate the boat's mass.
Physics Force & Laws Of Motion Level: Misc Level
A kangaroo can sustain a speed of 56 km/hr.Suppose a kangaroo is sitting on a log that is floating in a lake.when the kangaroo is frightened, she jumps off the log with a velocity of 50 km/hr toward the bank of the lake,The log moves off with a velocity of 3.8 m/s away from the bank. If the mass of the log is 250 kg, what is the mass of the kangaroo?
