Physics, 02.02.2021 08:00 whereswoodruff
Jack and Jill are doing a physics lab. They apply a 15 Newton force to a 3 kg cart to pull it up an inclined plane at a constant speed. The plane in inclinee at a 30 degree angle. Jack and Jill are exerting a force on the cart which is parallel to the inclined plane in order to displace it 2.0 meters along the incline to a final height of 1 meter. During this lab, how many Joules of work was done on the cart?
Answers: 1
Physics, 21.06.2019 16:30
In which scenario is the least amount of work done on a crate? a force of 120 n moves it 25 m. a force of 115 n moves it 26 m. a force of 130 n moves it 22 m. a force of 125 n moves it 27 m.
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Physics, 22.06.2019 14:20
Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.
Answers: 1
Physics, 22.06.2019 19:00
Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?
Answers: 1
Physics, 22.06.2019 21:50
Ajoint produces movement when its angle decreases. which type of movement is it?
Answers: 1
Jack and Jill are doing a physics lab. They apply a 15 Newton force to a 3 kg cart to pull it up an...
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