Real world efficiency are generally very high in the 90 percent range, true or false?

If a speeding train hits the brakes and it takes the train 39 seconds to go from 54.8 m/s to 12 m/s what is the acceleration?

In your own words, explain what the concept of density means-without using the formula.

What is your personal opinion on the awakening that's happening all around the world right now? Do you even know what it is? Do you feel awake?

Using echos to find an object

The lake water in a location in Florida has been found to contain high levels of fecal coliform. What are people in the location most likely to do? Select one: a. breed fish in the lake b. stop swimming in the lake c.

A hydraulic lift is used to lift a heavy box that is pushing down on a 1.5-m2 piston with a force of 1,700 N. What force needs to be exerted on a 0.12-m2 piston to lift the box?

Rauol's friend Johnny sets out from his house in the city. His displacement is 900 m 80° North of west. What is the x component of his displacement vector?

What is the relationship between gravity and mass? What is the relationship between gravity and distance?

A person performs 300 j of work over the course of 60 seconds how much power they did required

If you have a 90 V power source with a 30-Ω and 60-Ω resistor in series, what is the voltage drop over the 60-Ω resistor? 30 V 2 V 60 V 90 V