Which of the following is true about parallax?

A) It is used to measure distances to stars.

B) The parallax measures of distant stars are to tough to measure

C) The nearest stars have the smallest parallax angles.

D) Both A and B.

A truck with a heavy load has a total mass of 7100 kg. It is climbing a 15∘ incline at a steady 15 m/s when, unfortunately, the poorly secured load falls off! Immediately after losing the load, the truck begins to accelerate at 1.5 m/s2.

According to Ptolemy's model of the movement of celestial bodies, A. the sun is the center of the universe. B. the earth rotates around the moon. C. planets orbit in circular paths around the earth. D. the earth rotates around the sun.

Do any of the planets have flowing water?

We must never touch an electrocuted person before we disconnect the circuit. Why?

An idea is being proposed. The steps that lead to the idea are listed below. All evidence and arguments were considered. There was peer review. There were different outcomes each time. Can this idea be scientific?

To study the properties of various particles, you can accelerate the particles with electric flelds. A positron is a particle with the same mass as an electron but the opposite charge (+e). Express your answer in vector form.

A lawnmower engine running for 20 minutes does 4560000 j of work. What is the power output of the engine

Which of the following is a conductor for electricity? Question options: wood wool water rubber tire

The area where the magnetic force is exerted is known as which of the following? A. pole B. domain C. field D. area

How does no light affect the plants?