Physics, 03.07.2019 22:10 Vanesssajohn6294

Arock is suspended by a light string. when the rock is in air, the tension in the string is 38.7 n . when the rock is totally immersed in water, the tension is 32.0 n . when the rock is totally immersed in an unknown liquid, the tension is 19.0 n .
what is the density of the unknown liquid?

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 20:20

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

Answers: 2

Answer

Physics, 22.06.2019 19:00

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?

Answers: 1

Answer

Physics, 22.06.2019 19:40

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

Answers: 1

Answer

Physics, 22.06.2019 19:40

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc

Answers: 1

Answer

You know the right answer?

Arock is suspended by a light string. when the rock is in air, the tension in the string is 38.7 n ....

Questions