Which of the following characteristics of stars is affected by a star's temperature? Brightness

Color

Distance from Earth

Size

Which action will slow down the rate of a reaction

An astronomer would most likely use parallax to see the Doppler shift in a star. measure the distance to a star. measure the temperature of a star. see the emission spectrum of a star

A 60 W lightbulb is on for 24 hours. A stereo with a power of 150 W is on for 2 hours. Which statement correctly compares the energy used by these devices?

what is the size of the force needed to change the momentum of an object 2000 kg m/s over a time period of 0.5 seconds?

When using science to investigate physical phenomena, which characteristic of the event must exist?

Describe a beach that was near stormy seas and powerful waves

We all depend on electricity. Most electricity is created by electromagnetic generators at large power plants and distributed through an electric grid.

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.

On arrival at a vehicle collision, you observe a small fire in the engine compartment. A bystander is attempting to smother the fire with a jacket as you approach with an A-B-C extinguisher from your ambulance.

Gertrude writes a short story in which the main character must enter a nuclear-powered spaceship's engine room that has lost its shielding in order to prevent the engine from flooding the rest of the ship with radiation.