Answer:
63N, 45N
Explanation:
Given:
Tension 1 = T1
We have the following free body equations:
F - T1 = 100*0.3 -(I)
T1 - T2 = 60*0.3 -(II)
T2 = 150*0.3 -(III)
Adding the three above equations, we have
F - T1 + T1 - T2 + T2 = (100*0.3) + (60*0.3) + (150*0.3)
Hence, F = 93N
Hence, substituting into equation I we have
T1 = Force by bar on lighter cart = 93 - (100*0.3) = 63N
Hence, force that heavier cart exerts on bar
T2 = 150*0.3 = 45N
Answer:
A)partly transverse and partly longitudinal
Explanation:
A longitudinal wave is one in which the motion of the particles of the medium is parallel to the direction of propagation of the wave, while in a transverse wave the motion of the particles is perpendicular. In this case the dominos move both horizontally and vertically. So, the disturbance along its line has both components.
Answer: 38 weeks (266 days) from the date of conception.
Explanation: www.momjunction.com/pregnancy-due-date-calculator/
Answer:
The angle between the electric field lines and the equipotential surface is 90 degree.
Explanation:
The equipotential surfaces are the surface on which the electric potential is same. The work done in moving a charge from one point to another on an equipotential surface is always zero.
The electric field lines are always perpendicular to the equipotential surface.
As
For equipotential surface, dV = 0 so
The dot product of two non zero vectors is zero, if they are perpendicular to each other.
You have to balance the torque in order to make the bar balance
torque on the 21 kg mass is equal to = 21*10*0.12 = 25.2 NM
torque on the 12 kg mass is equal to = 12*10*0.21=
25.2 NM
THUS total comes to 50.4 NM
to to balance the torque
50.4/180 = 0.28 that's 28 cm from the centre to the opposite of the both masses