A bowling ball rolled with a force of 20 N accelerates at a rate of 5 m/sec2, a second ball rolled with the same force accelerat
1 answer:
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Explanation:
According to Newton's second law of motion, the rate of change of momentum is directly proportional to the applied unbalanced force. The mathematical expression is given by:
Where
F is the applied force
m is the mass of the object
v is the velocity with which it is moving
Momentum of a particle is given by the product of mass and velocity as :
Hence, this is the required solution.
Answer:
V=22.4m/s;T=2.29s
Explanation:
We will use two formulas in order to solve this problem. To determine the velocity at the bottom we can use potential and kinetic energy to solve for the velocity and use the uniformly accelerated displacement formula:
Solving for velocity using equation 1:
Solving for time in equation 2:
Answer:
The width of the sheet is
Explanation:
From the question we are told that
The distance of point P above a large sheet of metal is
The current on the large metal sheet is
The distance of the the point P below a long wire
The current on the long wire is
The magnetic field at P is
Generally magnetic field of P long wire is mathematically represented as
Generally magnetic field of P large sheet of meta is mathematically represented as
Where K is the current per unit width
The total magnetic field at P is
Making K the subject of formula
Substituting values
Generally K is mathematically represented as
Where w is the width of the large sheet
Therefore the width of the metal sheet