4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the

helicopter?

Which of the following is not used to measure wind? O A. psychrometer O B. wind sock O C. weather vane O D. anemometer

are the properties of a specific element the same as the properties of a molecule made up of that element? why or why not

Select the example that best describes a renewable resource. A. Coal is a source of fuel that is used to power large ships and trains. B. In some areas, heat from deep in the Earth can be used to heat water and homes. C.

A cannon ball is fired horizontally with a velocity of 50 metre per sec from the top of a cliff 90m high. After how many seconds will it strike the plain at the foot of the cliff? with what velocity will it strike the ground?

How does gravity effect acceleration

Why is a neutral object attracted to a charged object?

The international space station revolves around earths surface. which of the following statement s is true? a. it has no energy because it is stationary b. it has potential energy, but does not have kinetic energy c.

A sports car moving at constant speed travels 115m in 5.3 s. If it then brakes and comes to a stop in 4.0 s, what is it's acceleration? Express the answer in terms of g's, where g = 9.

Question 11 1 pts Nuclear power plants rely on to generate power. O climate change O fusion Ofission O coal

Which of the following is not a characteristic that geologists use to identify minerals? A. Softness B. Color C. Streak D. Fracture