The two ropes seen in (Figure 1) are used to lower a 255 kg piano exactly 6 m from a second-story window to the ground.

Which of these waves can NOT travel through the vacuum of space? A. microwave B. radio wave C. light wave D. sound wave

If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground? (Disregard wind resistance.

Ignacio and Velvet walk eastward with a speed of 8 m/s. If it takes them 7.5 minutes to walk to the store, how far in meters have they walked?

A crane performs 1820 J of work by lifting an object 35 meters. How much force did the crane exert?

ASuppose a suitcase has a mass of (m) 30 kg and a net force (N) of 10 kg*m/s. What is the acceleration rate of the suitcasein m/s? Show your work to support your answer.

What is the relationship between gravity and mass? What is the relationship between gravity and distance?

A person performs 300 j of work over the course of 60 seconds how much power they did required

If you have a 90 V power source with a 30-Ω and 60-Ω resistor in series, what is the voltage drop over the 60-Ω resistor? 30 V 2 V 60 V 90 V

How is thermal energy transferred during convection?

What is the purpose of a free body diagram? A. to show the velocity of an object B. to show the acceleration of an object C. to show the forces acting on an object D. to show the direction of motion vectors of an object