subject
Physics, 02.10.2019 05:20 hamaama

On planet tehar, the free-fall acceleration is the same as that on earth, but there is also a strong downward electric field that is uniform close to the planet's surface. a 1.84-kg ball having a charge of 5.28 μc is thrown upward at a speed of 20.1 m/s. it hits the ground after an interval of 4.10 s. what is the potential difference between the starting point and the top point of the trajectory? (use 9.8 m/s^2 for the acceleration due to gravity.)

ansver
Answers: 1

Another question on Physics

question
Physics, 21.06.2019 22:00
Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?
Answers: 3
question
Physics, 22.06.2019 05:30
Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
Answers: 1
question
Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
question
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
You know the right answer?
On planet tehar, the free-fall acceleration is the same as that on earth, but there is also a strong...
Questions
question
Mathematics, 19.09.2019 17:10
Questions on the website: 13722367