Which of these can a fun house mirror do? Select all that apply.

a) focus light rays

b) spread light rays

c) refract light rays

d) absorb a lot of light

e) reflect light rays so they're parallel to each other

The placebo effect happens when: O A. an individual is affected by the experimental treatment. O B. an individual participates in a survey and changes his or her behavior. O C.

An object becomes charged when the atoms in the object gain or lose A protons B neutrons C electrons D all of the above

Most meteor showers are associated with the orbits of

A dam holds back a lake that is 85m deep at the dam. If the lake is 20km long, how much thicker should the dam be if the lake were smaller, only 1.0km long?

Uranium-235 has to be enriched before it can be turned into fuel rods. This enrichment is achieved by 1.___ and2.

Which of the following statements best describes the current state of understanding regarding the apparent acceleration of the expansion of the universe?

Should young people be allowed to do extreme sports? (give me two reasons why) 1. Opinion: 2. Reason why: 3. Reason why:

A light ray is incident on a reflecting surface. If the light ray makes a "35°" angle with respect to the normal to the surface, what is the exact angle (in degrees) made by the reflected ray relative to the normal?

Reimbursement means that a client is A. able to apply for healthcare insurance and refunded for a partial sum of the payment plan by the state. B.

Meg runs a 10km race in 45 minutes (0.75 hours). What was her speed in kilometers per hour? a. 22 km/hr b. 7.5 km/hr c. 4.5 km/hr d. 13 km/hr