Physics, 25.11.2020 03:00 hungtistic
9) Which statement is correct about the potential energy of a car moving down a ramp?
-Potential energy depends on the mass and velocity of the car.
-Potential energy remains constant because total energy is constant.
-Potential energy is highest when the car is released at the top of the ramp.
-Potential energy is highest when the car reaches the bottom of the ramp
10)In a closed system of a cannon and cannonball, which changes would both result in an increase in the kinetic energy of the cannonball when fired from the cannon?(
increase the mass of the cannon or decrease the mass of the cannonball
increase the mass of the cannon or increase the mass of the cannonball
decrease the mass of the cannon or increase the mass of the cannonball
decrease the mass of the cannon or decrease the mass of the cannonball
Answers: 3
Physics, 22.06.2019 10:00
How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
Answers: 1
Physics, 22.06.2019 14:40
A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.
Answers: 1
Physics, 22.06.2019 17:30
How does the entropy of steam compare to the entropy of ice?
Answers: 2
Physics, 22.06.2019 18:30
Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)
Answers: 2
9) Which statement is correct about the potential energy of a car moving down a ramp?
-Potential en...
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