Physics, 07.12.2019 00:31 cvhufjbvbcxx2406

Step gently onto a bathroom scale, read the dial, and then jump from a chair onto the same scale.

1) does the dial show different readings in the two cases? choose the correct answer and explanation.

no, when you jump the scale shows the same value as when you gently step onto the scale.
yes, when you jump the scale shows a higher number at first. the reading then oscillates and settles to the same value as when you gently step onto the scale.
yes, when you jump the scale shows a higher number at first. the reading then oscillates and settles to a lower value than when you gently step onto the scale.
yes, when you jump the scale shows a lower number at first. the reading then oscillates and settles to the same value as when you gently step onto the scale.

2)has the gravitational force exerted by earth on you changed? choose the correct answer and explanation..

yes, the magnitude of the gravitational force exerted by earth on you has changed when you jump, because you have a downward acceleration.
no, the magnitude of the gravitational force exerted by earth on you has not changed.
yes, the magnitude of the gravitational force exerted by earth on you has changed when you jump, because you have a downward velocity.

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 22:00

Explain what makes a passenger in a turning car slide toward the door. critical thinking

Answers: 1

Answer

Physics, 22.06.2019 16:30

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Answers: 2

Answer

Physics, 22.06.2019 22:00

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.

Answers: 2

Answer

Physics, 22.06.2019 23:50

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?

Answers: 2

Answer

You know the right answer?

Step gently onto a bathroom scale, read the dial, and then jump from a chair onto the same scale.

Questions