Which is the best description of potential energy?(1 point) Responses All objects have potential energy stored in their chemical bonds and will have more potential energy when they are positioned above Earth’s surface. All objects have potential energy stored in their chemical bonds and will have more potential energy when they are positioned above Earth’s surface. Only some objects have potential energy stored in their chemical bonds. Only some objects have potential energy stored in their chemical bonds. Objects’ potential energy can be destroyed if the chemical bonds are broken. Objects’ potential energy can be destroyed if the chemical bonds are broken. All objects have potential energy stored in their chemical bonds and will have more potential energy when they are in motion.
5 answers
All objects have potential energy stored in their chemical bonds and will have more potential energy when they are positioned above Earth’s surface.
Nan’s suitcase has a mass of 14 kilograms. How much potential energy does it gain when she lifts it onto a bench that is 40 centimeters tall? PE=mgh (1 point) Responses 24.2 J 24.2 J 5,488 J 5,488 J 5.6 J 5.6 J 54.88 J
To calculate the potential energy gained by lifting the suitcase onto the bench, we can use the formula PE = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height.
Given:
m = 14 kg
g = 9.8 m/s^2 (approximation)
h = 40 cm = 0.4 m
Plugging in the values, we have:
PE = 14 kg * 9.8 m/s^2 * 0.4 m
PE ≈ 54.88 J
Therefore, the potential energy gained when lifting the suitcase onto the bench is approximately 54.88 J.
Given:
m = 14 kg
g = 9.8 m/s^2 (approximation)
h = 40 cm = 0.4 m
Plugging in the values, we have:
PE = 14 kg * 9.8 m/s^2 * 0.4 m
PE ≈ 54.88 J
Therefore, the potential energy gained when lifting the suitcase onto the bench is approximately 54.88 J.
Which factors does an object’s potential energy depend on?(1 point) Responses the object’s mass and height the object’s mass and height the object’s mass and height, and acceleration due to gravity the object’s mass and height, and acceleration due to gravity the object’s mass, height, and kinetic energy the object’s mass, height, and kinetic energy the object’s mass and velocity
The object's mass and height, and acceleration due to gravity.
1 answer