Answer:
<em>Answer: (A) 0.75 m/s^2</em>
Explanation:
The Second Newton's law states that an object acquires acceleration when an external unbalanced net force is applied to it.
That acceleration is proportional to the net force and inversely proportional to the mass of the object.
It can be expressed with the formula:
Where
Fn = Net force
m = mass
The ice skater pushes against a wall with a force of 59 N. The wall returns the force and the skater now has a net force of Fn=59 N that makes him accelerate. Being m=79 kg the mass of the skater, the acceleration is:
Answer: (A) 0.75 m/s^2
B precipitation,condensation,precipitation
Answer:
Part a)
Part b)
Since the radius is decreasing so induced current will increase the flux through the coil
So it would be clockwise in direction
Explanation:
As we know that magnetic flux linked with the coil is given as
now the rate of change in flux is given as
now we know that circumference is decreasing at rate of 15 cm/s
so here we know the length of circumference as
So rate of change in circumference is
final length of circumference at t = 8 s
Part a)
Now the induced EMF is given as
Part b)
Since the radius is decreasing so induced current will increase the flux through the coil
So it would be clockwise in direction
Explanation:
The acceleration of an object is equal to the rate of change of velocity. Its mathematical form is given by :
Where
v is final velocity, u is initial velocity and t is time taken
The SI unit of velocity is m/s and that of time is s. The SI unit of acceleration is 
If final velocity is more than the initial velocity, acceleration is positive.
If the final velocity is less than the initial velocity, the acceleration is negative. It is also known as deceleration.
Hence, all the statement is true.
