What is the efficiency of a device that takes 400J of heat and does 120J of work while giving off 280 J of heat

Select the correct answer. The motion of a car on a position-time graph is represented with a horizontal line. What does this indicate about the car's motion? А. It's not moving B. It's moving at a constant speed.

During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.148 kg baseball crashing through the pane of a second-floor window in a nearby building. The ball strikes the glass at 15.

6 The band room at school has soundproof walls. These walls prevent sound from disturbing other students who are outside the band room in other classrooms. What happens to the sound in the band room when the students are practicing their music? O A.

What is the main function of the pancreas?

Convert 5.7 miles to km

describe the relationship that exists between amplitude of a wave and the amount of energy that the wave carries

Recognize the relationship between stiffness of the medium and the speed of a wave.

Which of the following describes density only in terms of metric units? a. kilograms per cubic meter b. pounds per square meter c. pounds per cubic foot d. grams per cubic foot

A child drops a ball from a window. The ball strikes the ground in 3 seconds. What is the velocity of the ball the instant before it hits the ground?

Lc circuit consists of a 20.0 mh inductor and a 0.150 µf capacitor. if the maximum instantaneous current is 0.400 a, what is the greatest potential difference across the capacitor?