Given a right triangle ABC, which of the following statements must be true? check all that apply pic in comments

a) sinA=cos (90-C)

b) cosA=sinC

c) sinA=cos (90-A)

d) angle a and angle c are supplementry

1. Fluid mechanics is the study of a) how fluids do work. b) the types of fluids. c) how fluids form. d) classifying fluids. 2. Two solids in contact a) exert pressure only downward. b) exert pressure on each other.

The law of universal gravitation applies everywhere for everything applies everywhere but not for everything does not apply everywhere has not been proven

Circle the letter of the sentence that explains why no machine is 100% efficient. A. Electrical energy is transformed to mechanical energy by fuel. B. Mechanical energy is transformed to thermal energy by friction. C.

Is a glacier nothing more than a huge mineral flowing downhill? (Earth & Space)

How does the balloon react to the cloth item?

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?