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

Some areas of the Earth receive more solar radiation than others. Which of the following results from the Sun's uneven heating of the Earth?

Anybody have the answers to Earth Science Semester B Test Lesson 3 unit 10

You're driving down the highway late one night at 16m/s when a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50s, and the maximum deceleration of your car is 10m/s2.

bumper car A (281 kg) moving + 2.82 m/s makes an elastic collision with bumper car B (209 kg) moving + 1.72 m/s what is the velocity of car A after the collision (unit = m/s) remember: right is (+), left is (-)

An atom with an atomic number of 12 and a mass number of 25 can best be described by which of these? A) An atom that contains 12 protons and 13 neutrons. B) An atom that contains 13 protons and 12 neutrons.

Which statement best describes a solid?

Race car drivers must slow down as they make turns on the track. This is best explained by the law of inertia. Which statement best describes inertia for the car going around a turn? A) A body in motion stays in motion at the same speed.

What is is the ratio of the distance over which the force is applied to the distance over which the load is moved

What factor can increase the potential energy of an object? A Decrease in speed B Decrease in density C Increase in temperature D Increase in height from the ground?

Microwave ovens emit microwave energy with a wavelength of 12.3 cm. What is the energy of exactly one photon of this microwave radiation?