Acceleration = change in velocity/change in time
so...
a = 20 m/s / 2 seconds
a = 10
hope that helps :)
Given Information:
Charge = q = 7.0x10⁻⁶ C
Required Information:
Number of electrons = n = ?
Answer:
Number of electrons = 4.375x10¹³
Explanation:
We know that charge is given by
q = n*e
Where n is the number of electrons and e is the electronic charge that is 1.60x10⁻¹⁹ C
n = q/e
n = 7.0x10⁻⁶/1.60x10⁻¹⁹
n = 4.375x10¹³ electrons
Therefore, 4.375x10¹³ electrons were transferred.
Answer:
yes for both.
Explanation:
according to Newton's first law an object in motion will stay in motion until acted on by an outside force and an object at rest will stay at rest until acted on by an outside force. this means that an object that is moving will stay moving in the direction that it's moving and at the same speed unless there's an outside force acting on it and it will keep in motion until there is an outside force acting on it.
Answer:
An induced current flow counterclockwise in the loop of wire
Explanation:
The magnetic field directed normally up wards and the magnetic flux directed upwards decreases suddenly.
The reduction in magnetic flux induces the EMF and current.
Magnetic field B points upward i.e. along she +z axis
B= z•k
Since the magnetic field vanishes, then, B=0
The force in field is given as
F=L( i×B)
For the magnetic field to vanish, the current has to move in opposite direction i.e. counterclockwise the loop wire.
Therefore the induced EMF and current will try to nullify this effect by producing more magnetic field directed up wards from the plane of the surface and this current have to flow in opposite or counterclockwise direction.
The formula for gravitational force is:
F = G m1 m2 / r^2
where G m1 m2 are constants, therefore:
F r^2 = constant
Part b. Given F1 = 2000 N, r1 = 100 km
Find F2 = ?, r2 = 150 km
(2000 N) * (100 km)^2 = F2 * (150 km)^2
F2 = 888.89 N
Part c. Given F1 = 2000 N, r1 = 100 km
Find F2 = ?, r2 = 50 km
(2000 N) * (100 km)^2 = F2 * (50 km)^2
F2 = 8000 N