Physics Answers

What is the speed of sound (in m/s) in carbon dioxide at the normal boiling temperature of water?

If an object is moving at 2 m/s towards a porcelain vase, do you

think it will have enough momentum to break the vase? Explain.

Find the acceleration of a 1500.kg car, driven by 2200.N against 450.N of friction

A 10Mg truck rolling at a constant speed of 30 kph along a horizontal rail comes to an incline of slope sin 0.1. Calculate how far it will coil up the slope before coming to a halt, (a) ignoring all resistive forces, and (b) assuming the rolling vesistance is 5% of the normal reaction of the truck

5kg weight who mation is constrained by vertical guides is dropped from reit 0.5 m onto a vertically aligned spring whose stiffness is 10 Nm How fast is the weight travelling when the spring has been compressed by 50 mm

A cube of mass 10 kg is at rest on a horizontal surface when it is subjected to a horizontal force P that varies with time t as P = 20t. If the static and kinetic coefficients of friction are both 0.4, calculate the velocity of the cube after 5 s.

A force of P N acting on a body of 5 kg travelling with a velocity of 5 ms increases its velocity to 10 ms. If the force acts in the direction of motion for a period of 5 s, what is the value of P?

A 500 Mg fug is Towing a 1000 Mg barge at a steady speed of 3 ms when the towline, which is horizontal, is winched in at a rate of 0.5 ms. What is the tug's speed during this operation!

A railway truck of 100 kg mass travelling with a velocity of 7 ms collides with a second truck of 200 kg mass and the two couple automatically and move off together. Calculate the velocity of the coupled trucks, and the energy lost to the system, if the second truck has a speed of 5 ms (al in the same direction, (b) in the opposite direction and ic) is initially stationary

A car preceding down a 1 in 10 incline at 6.5kph when it's brake are abruptly applied. How far does it skid along the road before stopping If the wheels lock and the coefficient of friction between tyres and the road is 0.7?