Archive day

March 3, 2026

2,741 public questions were asked on this day.

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The rate(speed) at which work is done is the definition of Kinetic Energy Power Time Work
Asked by p 1 answer
Use the equations to solve the following: A lab cart has a kinetic energy of 4.39 J and a mass of 2.5 kg. What is its velocity? 3.51 m/s 27.44 m/s 1.87 m/s 8.87 m/s
Asked by p 1 answer
Use the equations to solve the following: Billy lifts a 150 N crate with a rope and pulley 22 m in 12 seconds. What is the power of this task? 269.5 J 3300 J 275 J 3234 J
Asked by p 1 answer
Using the picture above, what would the Kinetic energy be at point A? 0 75 100 50 25
Asked by p 1 answer
The energy held by the stretching or compressing of an object such as a spring or a rubber band is considered to be what form of energy? Chemical Energy Elastic Potential Energy Thermal Energy Kinetic Energy
Asked by p 1 answer
Which action would require no work to be done on an object? Holding the object stationary above the ground Lifting the object from the floor to the ceiling Decreasing the speed of the object until it come to a rest Pushi...
Asked by p 1 answer
AB¯¯¯¯¯¯¯¯ has endpoint A(6, −12) and B(−3, 9) . What are the endpoints of A′ and B′ after dilation with a scale factor of 13 and a center of dilation at the origin of (0, 0) ? Endpoint A′ is ( , ). Endpoint B′ is ( , ).
Asked by IGotYa 1 answer
Use the equations to solve the following: A rock on a 25 m high cliff has 1700 J of potential energy. What is its mass? 68 kg 42500 kg 6.94 kg 416500 kg
Asked by p 1 answer
What kind of energy do all moving objects have? Elastic Potential Electrical Electromagnetic Kinetic
Asked by p 1 answer
On a roller coaster the potential energy is at a minimum on the tallest hill True False
Asked by p 1 answer
Which roller coaster will NOT have enough kinetic energy at the bottom of the first hill to carry the car over the second hill?
Asked by p 1 answer
On a roller coaster, the kinetic energy is at a maximum at the lowest point. True False
Asked by p 1 answer
A rubber band has a spring constant of 12 N/m, if the rubber band is stretched 0.25 m. What is the elastic potential energy stored in the rubber band? 0.120 J 7.65 J 9.8 J 0.375 J
Asked by p 1 answer
Using the picture above, what is the Kinetic Energy at Point J? 10 4.5 20.5 100
Asked by p 1 answer
Match the type of energy with the definition. Prompt 1The energy of position such as a rock on a hill is _______. Answer for prompt 1 The energy of position such as a rock on a hill is _______. Prompt 2Stored energy and...
Asked by p 1 answer
Two students describe the sides of right triangle ABC in relation to ∠B. Triangle A B C is shown. Angle A C B is a right angle. Tomas AB is the hypotenuse. AC is the opposite side. BC is the adjacent side. Iliana AB is t...
Asked by hh 1 answer
Tom Sawyer launches his 180-kilogram raft on the Mississippi River by pushing on it with a force of 75 Newtons. How long must Tom push on the raft to accelerate it to a speed of 2.0 m/sec? .833 s 1 s 4.8 s 6750 s
Asked by p 1 answer
A net force of 100 Newtons is applied to a 20-kilogram cart for 9 seconds. What is the carts change in momentum? 5 900 180 45
Asked by p 1 answer
If ... Change in momentum = Impulse then ... mass x velocity = Force x Time Mass x Acceleration Force x Mass Force x Acceleration
Asked by p 1 answer
Space probes can A. travel farther than Earth-orbiting satellites. B. study parts of the solar system too dangerous for humans. C. carry specialized instruments for specific space missions. D. all of the above
Asked by ben hen 1 answer
Which of the following types of technologies has best helped scientists to study very high-energy objects in outer space, such as exploding supernovae, black holes, and pulsars? A. radio telescopes B. space stations C. X...
Asked by ben hen 1 answer
Which of the following statements correctly analyzes the typical cause of famine?(1 point) Famines are exclusively the result of environmental factors. Famines result from a combination of human and environmental factors...
Asked by nuoll 1 answer
A skateboard is sitting at rest in the street. A 45 kg sixth grader gets a running start at 4.3 m/s and jumps on the 8 kg skateboard, and they both roll down the street. How fast will they be moving together down the str...
Asked by p 1 answer
Which of the following was developed because of the research done to find strong, lightweight fabrics for space use? A. polyester B. denim C. bullet-proof vests D. spandex
Asked by ben hen 1 answer
Which of the following statements correctly analyzes the long-term consequences of disease on humanity?(1 point) Disease outbreaks lead to economic downturns but have little effect on political or social institutions. Di...
Asked by nuoll 1 answer