Simon is riding a bike at 12 km/h away from his friend Kesha. He throws a ball at 5 km/h back to Keesha who is standing still on a sidewalk. How fast you would Kesha say the ball is traveling?

Which of the two resistors dissipates the larger amount of power?

Which is an example of an environmental health concern? Monitoring pathogens in a public water supply Interpreting data about people's exercise habits Creating an intervention to reduce alcohol abuse Finding the cause of an national influenza

What objects will emit energy in the universe

Felix expends 100 W of power to clomb 10 meters in 20 seconds how much force does he exert

What is the mass of a stone moving at a speed of 15 meters/second and having a momentum of 7.5 kilogram·meters/second?

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.

An LC circuit has a 6.00 mH inductor. The current has its maximum value of 0.570 A at t = 0s. A short time later the capacitor reaches its maximum potential difference of 66.0 V. What is the value of the capacitance?

The first law of thermodynamics states that ΔE = Q - W. Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston.