The acceleration of the universe's expansion is attributed by many cosmologists to the presence of which of the following?

A. Dark matter

B. Black Holes

C. Dark energy

D. Gravitaional pulls from unseen galaxies**

i think its D but not sure

In general, as air temperature decreases, the rate of condensation ... A. becomes indeterminable. B. decreases. C. increases. D. stays the same.

Carry out the following calculation. Express your answer in the correct number of significant figures. A solid rectangular block has a density of 2.6 g/cm3. The block measures 1.8 cm by 4.0 cm by 2.3 cm. What is the mass, in g, of the block?

What main topic of dynamics is not addressed in kinematics? a. how things actively change all the time b. inertia c. how position, displacement, velocity, and acceleration are related d. how forces affect motion

Which of the following correctly describes the appearance of muscle tissue found in the lining of the small intestine?

A neutron has what type of electrical charge? A.) positive B.) negative C.) neutral D.) varies

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.

A spring (k = 790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is applied to stretch it? Question 3 options: 3.4 m 0.77 m 3.9 m 0.29 m

Inert gas used to make bright city lights True or False

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes