Answer:
R = 3.606 KN, θ = 24°
Explanation:
Resolving the forces to the x-direction
Rx = 3cos60 + 2cos30
= 1.5 + 1.732 = 3.232 KN
Resolving the forces to the y-direction
Ry = -3sin60 + 2sin30
= -2.6 + 1 = -1.6 KN
Getting the resultant of the two forces
R = 
Substituting the values of Rx and Ry, we obtain
R = 3.606 KN
tanθ = Ry/Rx = | -1.6/3.232 |
Then we have θ = 24°
In unmagnetized materials the domains are randomly aligned in different directions and cancel each other out. In a magnet all the domains are oriented in the same direction. In the case of a nail, the domains can be aligned in the same direction causing the nail to become magnetic.
Answer:
0.076 m/s
Explanation:
Momentum is conserved:
m v = (m + M) V
(0.111 kg) (55 m/s) = (0.111 kg + 80. kg) V
V = 0.076 m/s
After catching the puck, the goalie slides at 0.076 m/s.
Would presume the energy as kinetic energy.
E = (1/2)*mv²
But m = 0.05kg, velocity here = 0.70c, where c is the speed of light ≈ 3* 10⁸ m/s
Ke = (1/2)*mv² = 0.5*0.05*(0.7*<span>3* 10⁸)</span>² = 1.1025 * 10¹⁵ Joules
There is no exact match from the options.