Physics, 20.01.2022 21:20 makayla2583
Anyone good at physics, that can help me? Will give 100 point!!!
You don't need to show your work I just need the answer. Thank you.
Starting from rest, a 10 kg block slides 11.9 m down a frictionless ramp (inclined at
30◦ from the floor) to the bottom. The block then slides an additional 21.1 m along the floor before coming to stop. The acceleration of gravity is 9.8 m/s2.
A) Find the speed of the block at the bottom of the ramp.
B)Find the coefficient of kinetic friction between block and floor
C)Find the magnitude of the mechanical energy lost due to friction.
Answers: 2
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The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.
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Physics, 22.06.2019 11:30
(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?
Answers: 3
Anyone good at physics, that can help me? Will give 100 point!!!
You don't need to show your work...
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