What is the half life of an element of 1/8 of a sample remains after 12 years?

A sound technician is testing the sound acoustics in a theatre for an upcoming music concert. As he moves towards the speakers, he notices the pitch of the music gets higher.

What are the negative aspects of using nuclear energy? Select all that apply. - It creates solid radioactive waste that has to be stored safely over the long term - Produces a great deal of air pollution - Risk of danger at reactor sites - Adds

How do objects become negatively charged using the contact method

A string is wrapped around a pulley with a radius of 2.0 cm and no appreciable friction in its axle. The pulley is initially not turning.

Spectral lines from Galaxy B are redshifted from their rest wavelengths twice as much as the spectral lines from Galaxy A. According to Hubble's law, what can you say about their approximate relative distances? a.

Some people refer to nuclear power as "clean energy." Why do they make this argument? Do you agree or disagree? Explain your answer.

What does thermal energy mean?

Oil having a density of 924 kg/m 3 floats on water. A rectangular block of wood 3.79 cm high and with a density of 970 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block.

Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.