Reconditioning valves is being discussed. Technician A says the valve is stroked across the stone at the same time it is fed in. Technician B says when the last pass is complete, back the valve out of the stone. Who is correct?

Two identical charges are separated by a distance d. If the distance between them is increased to 3d, what will happen to the force of repulsion between them? A) It will be one-ninth the original force. B) It will be one-third the original force.

1. What would be the final temperature of a mixture of 50g of water at 200C temperature and 50g of water at 400C temperature?

A petrol engine that transforms 1000J of chemical potential energy into 300J of kinetic energy, and 700J into wasted heat and sound energy. Calculate the Efficiency. Tysm ppl

All of the following are types of galaxies except Spiral Elliptical Irregular Spherical

A 150 kg mass is on a cliff 50 m high. What is its potential energy? 9 How much work is done moving a 2.5 kg book to a shelf 3.0 m high? 10. A 150 pound man runs up a stairway 25 feet above ground level in 10 s. How much work did the man do?

What happens to particles when a substance gains energy and changes state?

The density of mercury is 13,600 kg/m³. Determine the mass of 10.0 cm³ of mercury.

A force of 250 N is applied to an object that accelerates at a rate of 10m/sec2. What is the mass of the object?

The grounded conductor and the grounding conductor are one and the same conductor and perform the same function.

Summarize Newton's First Law