Physics, 10.03.2021 20:00 lizzyhearts
PLEASE ANSWER
Krishne wants to measure the mass and volume of a key. Which tools should she use?
A. a balance and a beaker of water
B. a balance and a meter stick
C. a beaker of water and a ruler
D. a ruler and a meter stick
Answers: 2
Physics, 21.06.2019 19:40
An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j
Answers: 1
Physics, 21.06.2019 22:50
A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20Ā° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!
Answers: 1
Physics, 22.06.2019 16:30
Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?
Answers: 1
Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0Ć10ā5 kgā
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
PLEASE ANSWER
Krishne wants to measure the mass and volume of a key. Which tools should she use?
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