Which variable stars have pulsation periods between 1.5 hours and 1.2 days?

A. Cepheid variables

B. Protostars

C. RR Lyrae variables

D. Nebulas

Patty makes a table of the symbols used for the parts of an electric circuit. What label should Patty place in the marked cell? Battery Switch Resistor Bulb

Wich subatomic particles will you add or remove to change the mass of an atom? A) electrons and protons B) protons or neutrons C) electrons or neutrons D) Electrons only

Anything that takes up space and has weight is called

Tina's calculations of the tarantula found that the spider was able to cover 20 centimeters in five seconds what was the average speed of the spider in miles per hour

How do you find input energy with only the efficiency and output energy given?

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.

An LC circuit has a 6.00 mH inductor. The current has its maximum value of 0.570 A at t = 0s. A short time later the capacitor reaches its maximum potential difference of 66.0 V. What is the value of the capacitance?

The first law of thermodynamics states that ΔE = Q - W. Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston.