3. if atoms are mostly empty space, why can't
we walk through walls?...
Answers: 3
Physics, 22.06.2019 17:30, RegencySlayer5304
Alarge cruise ship of mass 7.00 β 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Physics, 22.06.2019 17:40, yoongnzl
Aspring is used to stop a 50-kg package which is moving down a 20ΒΊ incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Physics, 23.06.2019 11:00, tatiiiee
Abox that has self-contained cable clamps holds two light switches. a two-wire no. 12 cable with ground feeds the box, and a pair of two-wire no. 12 cables (four conductors) with ground wires leaves the box to feed the light fixtures. the second switch is fed by a no. 12 jumper wire from the first switch. which one of the following box combinations would furnish the minimum allowable volume? a. two 3-inch Γ 2-inch Γ 21β2-inch gangable device boxes b. two 3-inch Γ 2-inch Γ 11β2-inch gangable device boxes c. two 3-inch Γ 2-inch Γ 23β4-inch gangable device boxes d. two 3-inch Γ 2-inch Γ 21β4-inch gangable device boxes
Answers: 2
Mathematics, 11.12.2019 02:31
History, 11.12.2019 02:31
Mathematics, 11.12.2019 02:31
Mathematics, 11.12.2019 02:31