About 40 j is required to push a crate 4 m across a floor. if the push is in the same direction as the motion of the crate, the force on the crate is about

A night lamp uses a 30 W bulb. If it is left on continuously for 8 hours, how much energy will it use?

If you throw a 0.25 kilogram ball with a force of 20 newtons what's the answer what's the acceleration of ball

Which of the substances listed in the table on the first page would heat up more quickly if an equal amount of heat energy were applied to all of the substances at the same time? Explain your answer.

Question: Which statement about chemical reaction rates is true? Answers: (A) The reaction rates cannot change. (B) The reaction rates are always constant. (C) The reaction rates can increase. (D) The reaction rates cannot decrease.

Which of the following is NOT an appropriate acceleration unit? A) year/day/mile B) meter/sec/sec C) mile/hour/sec D) centimeter/sec/year

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.