Which collects light in a reflecting telescope?

a. concave lens

b. concave mirrors

c. convex lens

d. convex mirror

The end diastolic volume of a heart is 140 mL Assume that it is a sphere. At end diastole, the intraventricular pressure is 7mmIIg. The wall thickness at this time is 1.1 cm.

What are the moons of the outer planets made of, and how is their composition different from that of our Moon?

How much work is done when a book weighing 2.0 newtons is carried at constant velocity from one classroom to another classroom 26 meters away?

A diamonds mass is 5.28g and its volume is 2cm cubed whatsthe density

An electric motor rotates 60 times per second if the alternating current source is 60 Hz. How many times will an electric motor rotate in one hour if the alternating current source is changed to 50 Hz?

When a bat uses echolocation to determine the distance to an insect, it sends out a sound wave and waits to see how long the sound takes to echo back. Suppose now that a bat hears its echo 0.06 LaTeX: ss after it emitted the sound.

An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. The angular velocity of the wheels follows the equation? (t) = at? bsin (ct) fort?0, where t represents time (measured in seconds), a = 0.500 rad/s2, b = 0.

This boy uses a force to lift a heavy rock. (He is carrying it.) What can the boy do if he wants to lift the same rock more quickly? A. use greater upward force B. use greater downward force C. decrease the force of gravity D.

The difference in electronegativity values between H and O is 1.4. What type of bond will these elements form?

True or false. when light passes from one medium to another the speed changes.