Um objeto sobe verticalmente com velocidade de 10m/s. Quando sua altura é de 60m, uma parte desse objeto cai. Considerando g=10m/s², determine:

As you slide a heavy box across the floor, friction applies a force of - 60 N over a distance of 5 m. How much work is done by friction? A. - 55 J B. - 60 J C. - 300 J D. - 15 J

Which best compares a brush and a commutator in an electric motor?

A student adds solution "X" to a beaker of water, instantly the student notices that the beaker becomes warm to the touch. Which of the following best describes the type of reaction the student witnessed?

Based on the numbers in the previous question, an 80-pound Earth girl would weigh about ___ pounds on the planet Namar.

When the Net Force quadrupled from 50N to 200N, how many times bigger was the acceleration?

A 2,537-kg truck moving at 14 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 8 m/s. What was the mass (in kg) of the struck car

Which of Newton's laws accounts for the following statement? "A force cannot act alone."

Determine the maximum weight of the bucket that the wire system can support so that no single wire develops a tension exceeding 100 lb.

two objects each weighing 2kg are lifted through the same distance in 4s and 1s respectively. which scenario requires more work?

NaCI is__ an acid a base a salt