A 24 volt doorbell carries a current of 1/2 ampere. Calculate the resistance in the bell

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Assume that you heat your home with a heat pump whose heat exchanger is at t_{/rm c} = 2^/circ {/rm c}, and which maintains the baseboard radiators at t_{/rm h} = 47 ^/circ {/rm c}.

The sun is part of which type of galaxy? a. irregular b. elliptical c. central d. spiral

You push a block to the top of an inclined plane. The mechanical advantage of the plane is 5. The inclined plane is 10 meters long. What is the height of the inclined plane? 0.5 m 2 m 50 m 10 m

The cells of some organisms contain both chloroplast and mitochondria, what would happen if these cells would move from a light environment to a dark one?

When the net force on an object is greater than 0, how is its related to its acceleration

Total internal reflection occurs only if

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. the electron and neutrino are emitted at right angles and have momenta of 9.80 ✕ 10-23 kg·m/s, and 5.70 ✕ 10-23 kg·m/s, respectively.

A child is sliding down a slide at the playground. Is the mechanical energy conserved? Why or why not? The mechanical energy is conserved. There is as much KE at the end as there was PE at the beginning. The mechanical energy isn't conserved.

Which term refers to the rate at which the velocity of a moving object changes? A. acceleration B. displacement C. resonance D. turbulance

This is a number, as of years, days, minutes, or seconds representing such an interval. The SI standard unit of this is the second.