Physics, 11.12.2019 03:31 janeou17xn
The collision between a geological hammer and a rock lying loose on the ground can be considered to be approximately elastic.
calculate the final speed of a 0.21-kg rock when it is struck by a 0.55-kg hammer moving with an initial speed of 5.2 m/s. the rock is initially at rest.
Answers: 1
Physics, 22.06.2019 05:30
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
Answers: 2
Physics, 22.06.2019 12:10
Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?
Answers: 2
Physics, 22.06.2019 22:00
Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has
Answers: 1
Physics, 23.06.2019 01:00
Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.
Answers: 3
The collision between a geological hammer and a rock lying loose on the ground can be considered to...
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