Answer :
The time is 0.46 sec.
Explanation:
Given that,
Diameter = 0.30 mm
Voltage = 1.5 V
Length = 5.5 cm
Resistivity of gold
We know that,
The resistance is
...(I)
The current is
...(II)
Put the value of R
We need to calculate the drift velocity
Using formula of drift velocity
Put the value into the formula
We need to calculate the time
Using formula of time
Put the value into the formula
Hence, The time is 0.46 sec.
There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.
C)a seated passenger on the train
low speed Galilean relativity
Answer:
a) 75 N
Explanation:
Newton's law of universal gravitation states that the force between two objects is:
F = mMG / r²,
where m and M are the masses of the objects, G is the universal constant of gravitation, and r is the distance between the objects' centers of mass.
When the object is 500 km above the surface:
100 N = mMG / (1,000,000 m + 500,000 m)
mMG = 1.5×10^8 Nm
When the object is 1000 km above the surface:
F = (1.5×10^8 Nm) / (1,000,000 m + 1,000,000 m)
F = 75 N
Answer is A.