Answer:
Acceleration is 9.8 m/s^2
Explanation:
If the boulder falls from the cliff then the gravitational force will apply on it and due to gravitational force, the acceleration will be generated. Moreover, the acceleration generated in this case will be called the acceleration due to gravity. Therefore, the acceleration will remain constant irrespective of time and height because the gravitational force is constant. Thus, acceleration is 9.8 meters per second square.
Answer:
did you find the answer please answer back
Answer:
60 km
Explanation:
For an object (or a person, such as in this case) moving at constant speed, the speed is equal to the ratio between the distance travelled and the time taken:
where
v is the speed
d is the distance
t is the time taken
In this case, we have:
v = 120 km/h is the speed
t = 30 min = 0.5 h is the time taken
Therefore, we can rearrange the equation to find the total distance travelled:
Answer:
(a): .
(b): 20.94 Volts.
Explanation:
<u>Given:</u>
- Area of the coil = A.
- Number of turns of the coil = N.
- Magnetic field in which the coil is placed = B.
- The frequency with which the coil is rotating = f.
<h2>
(a):</h2>
The magnetic flux linked with a coil is defined as
where,
- is the area vector of the coil, directed along the normal to the plane of the coil.
- = angle between the magnetic field and the area vector of the coil.
Assuming that the magnetic field is along the normal to the plane of the coil, initially.
Therefore, at any later time t, the angle which the magnetic field makes with the normal to the plane of the coil is is given by
Therefore, the magnetic flux linked with the coil at any time t is given by
According to the Faraday's law of electromagnetic induction, the emf induced in the coil is given by
<h2>
(b):</h2>
The amplitude of the alternating voltage is the maximum value of the induced emf in the coil, the induced emf in the coil is maximum when .
Therefore, the amplitude of the alternating voltage is given by
Given values are:
- N = 100 turns.
- A = .
- B = 0.1 T.
- f = 2000 rev/min =
Putting all these values,
Answer:
Below:
Explanation:
Consider two rays originating from the bottom of the pond. As these rays get refracted into the air, they bend away from the normal. ... This point gives the apparent position of the bottom of the pond, therefore, the pond appears to be shallower.
Hope it helps....
It's Ms-Muska