So we want to know what will happen to the needle of a compass that is held upright and pointing left in front of the solenoid if the current in the solenoid is reversed. If the current is reversed in the solenoid then the direction of the magnetic field of the solenoid is also reversed. So the needle that was pointing left will now point right after the direction of the current is changed.
Answer:Metaloids have properties of both metals and non-metals.
Explanation:
Answer:
36N
Explanation:
First draw a diagram so you can see which forces act in which direction.
Then define which is your positive direction. I chose the direction of accelleration (downward) to be positive. This means that the weight of the object is also acting in the positive direction but Tension is acting in the negative direction.
If the elevator which contains the object within is accellerating at 2.6 ms^-2 then the object and string system is also accellerating at the same rate.
F = ma where F is the resultant force.
Resultant for is Weight + Tension but tension is in the negative direction so
F = mg -T
F = 5g - T
F = ma so F = 5 x 2.6
13 = 5g-T
T = 5g - 13
T = 36N
(I've taken g = 9.8ms^-2 but if this is for a physics class I'd take it to be 9.81ms^-2)
Answer:
m₁ = 4.65 Kg
m₂ = 1.15 Kg
Explanation:
given,
heavier mass be equal to m₁
lighter mass be equal to m₂
distance between the two objects = 20.5 cm = 0.205 m
force of attraction = 8.50 x 10⁻⁹ N
combine value of mass = 5.80
m₁ + m₂ = 5.80 Kg
using formula
on solving the above equation
m₁ = 4.65 Kg
now,
m₂ = 5.80 - 4.65
m₂ = 1.15 Kg