A paper weight is dropped from the roof of a block of multi story flats. Each storey being 3 metre high. It passes the ceiling of the 20th storeys at 30m/sec. If g = 10.0m/sec^2, How many storeys does the flat have.

Mr. Phillips' car is parked on a steep hill with the brakes applied and the engine off. Because of the car's position, it has gravitational potential energy. How could this gravitational potential energy be transformed into kinetic energy? A.

Risks are only in a persons mind would know from facts to back them up

Technician A says that daytime running lights (DRLs) light the headlights, usually at reduced intensity, whenever the engine is running. Technician B says high-intensity discharge (HID) headlights are brighter and have a yellow tint. Who is right?

Explain why the motion of a body which is moving with constant speed in a circular path is said to be accelerated?

What do u think is the smallest piece that you could break sand into

The thermal contact resistance at the interface of two 1-cm thick copper plates is measured to be 0.000056 m2K/W.

A provides resistance in an electric circuit. a. wire b. light bulb c. switch. d. battry

Why is it good for scientist to be skeptical

Which of the following describes a scientific law? A. based of scientific evidence B. explains how and why nature does what it does C. not based of scientific evidence

Before leaving her home, Myesha makes sure that every electrical appliance is unplugged and checks that every window and door is securely locked. She checks everything seventeen times according to a strict ritual that she has worked out.