Physics, 30.11.2019 02:31, thestuckone
Achild with a weight of 220 n swings on a playground swing attached to 1.90-m-long chains. what is the gravitational potential energy of the child-earth system relative to the child's lowest position at the following times
(a)when the ropes are horizontal
(b) when the ropes make a 25.0° angle with the vertical
(c) when the child is at the bottom of the circular arc
Answers: 1
Physics, 22.06.2019 14:30, lizzie3545
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
Physics, 22.06.2019 15:50, shaylawymannnnn
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Physics, 22.06.2019 19:30, FireFlight
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
Achild with a weight of 220 n swings on a playground swing attached to 1.90-m-long chains. what is t...
Geography, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00
Chemistry, 10.02.2021 04:00
Social Studies, 10.02.2021 04:00
Mathematics, 10.02.2021 04:00