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Calculate the kinetic energy of a toy car of mass 2 kg with a speed of 1m/s
An engine raises 100kg of water through a height of 60m in 20s. what is the power of the engine
1- Ifg represents pressure gradient P/L, n represents coefficient of viscosity, a represents radius of the pipe and Q represents volume of liquid issuing per second, then the integers x,y and z, such that Q a n av g², may be (where P is the pressure difference between the ends of the pipe and L is its length).
a) x = 1, y 4, z= -1
b) x= -1, y =4, z = 1
c) x 1, y =-4, z=-1
d) x=-1, y = 4, z =-1
A weight of 30 N is supported by two strings AB and AC of lengths 0.5 m and 1.2 m respectively. If BC is horizontal and of length 1.3 m, calculate the tension in AC and the angle BCA. A diagram is required with the solution.
Nasa is expected to send a 2600 kg satellite 450 km above the earth surface.
A) what is its radius?
B) what speed will it have?( Hint: earth mass is 5.97 x 10²⁴ kg)
C) what is its orbital period?
D) what is its radial acceleration?
A basketball of mass 0.0400 kg is dropped from a height of 5.00 meters to the ground and bounces back to a height of 3.00 meters .
A. On its way down, how much potential energy does the ball lose?
B. On its ways, how much potential energy does the ball regain?
How much potential energy does a car gain if a crain lifts the car with a mass of 1,500 kg and 20 meters straight up?
A distance of 0.002 meter separates two objects of equal mass. If the gravitational force between them is 0.0104N, find the mass of each object.
The moon has a mass of 7.34 x 10²² kg and a radius of 1.74 x 10⁶ meters. If you have a mass of 66kg, how strong is the force between you and the moon?
The time period of simple pendulum is 2s.what Will be it's length on earth
