How do scientists know that dark matter exists?

a. it absorbs radio waves.

b. it emits electromagnetic radiation.

c. it exerts a gravitational pull on other matter.

d. it blocks the light coming from other objects.

The rotational inertia of an object is greater when most of the mass is located near the center. away from the rotational axis. on the rotational axis. off-center.

4. Identify Problems A student is describing a longitudinal wave in his notebook. He writes down "The distance between crests is 3 cm." What is wrong with what the student recorded?

An object was accelerated with a force of 150 N from rest to a velocity of 10m/s in 5 sec. the force of friction opposing the object was 100N. What was the object's mass

If a lamp has a resistance of 50 ohms and is operated by a p. d. of 10V, find the current flowing through it

Caused by the tilting of the Earth s axis

Why do atoms like carbon and nitrogen not like to make ions, while sodium and chlorine do?

Which of the following is the kinetic rate equation for the addition-elimination mechanism of nucleophilic aromatic substitution? rate = k[aryl halide] rate = k[nucleophile] rate = k[aryl halide][nucleophile] rate = k[aryl halide][nucleophile]2

What idea is the kinetic molecular theory based on?

What happens when ionic bonds are formed? Metal atoms lose electrons, and nonmetal atoms gain electrons. Metal and nonmetal atoms both lose electrons. Metal atoms gain electrons, and nonmetal atoms lose electrons.

Explain what centimeters, kilometers, and millimeters are.