Other Physics Answers

What is precision

What is the magnitude of the couple which acts on a rotating circular dics of radius 2m pivoted at its centry by a constant tangential of 4N?

A backpack has a mass of 4.8 kg.  How much does it weigh?

A boy throws a ball vertically upwards with a speed v

Which row describes the speed and the acceleration of the ball at point X on the way upwards? speed acceleration A decreasing upwards B decreasing downwards C increasing upwards D increasing downwards 

A water is pumped at a rate of 24 cm^3/s through a 0.50 cm radius pipe on the main floor of a house to a 0.35 cm radius pipe in a solar hot water collector 4 m higher on the roof. If the pressure in the pipe on the roof is 1.2x10^5 Pa, what is the pressure in the larger pipe on the floor?

A block of cheese is pulled on by a string and slides to the right along a rough surface. What is the correct free body diagram for the block of cheese

An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons.

- determine the net force acting on the object and calculate the acceleration of the object

A car travels one-third of the path with the speed of 40 km/h, one-fourth of the path with a speed of 30 km/h and the remaining part of the path with a speed of 50 Km/h. What is the avarege speed of the car for the whole trip in km/h

A water is pumped at a rate of 24 cm^3/s through a 0.50-cm radius pipe on the main floor of a house to a 0.35-cm radius pipe in a solar hot water collector 4 m higher on the roof. If the pressure in the pipe on the roof is 1.2x10^5 Pa, what is the pressure in the larger pipe on the floor?

A rope 33 ft long is stretched between a tree and a car. A man pulls with a force of 3 Lbs at right angles to and at the middle point of the rope, and move this point 20 inches. Assuming no stretching of the rope, what is the tension in the rope at the final position?