2. If the efficiency of a device is 64 %, what is the amount of Energy lost/ wasted by this device?
Explain

What is the coefficient of kinetic friction μk between the block and the tabletop?

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force

An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station