Answer:
Work done W =1406.25 J
Explanation:
Work done on a body can be calculated using newton's 2nd laws:
F=ma
Hence acceleration of the block is given by:
Displacement of the object is given by:

Substitute the values
Now work done is given by:
W=F.S
W = 25×56.25
W =1406.25 J
Dark matter may explain <span>unexpected orbital velocities of stars in galaxies.</span>
Fundamental frequency is the "base frequency" upon which the sound is built.
Answer:
The width of the central bright fringe is 7.24 mm.
Explanation:
Given that,
Wavelength = 632.8 nm
Width d= 0.350 mm
Distance between screen and slit D= 2.00 m
We need to calculate the distance
Using formula of distance

Put the value into the formula


We need to calculate the width of the central bright fringe
Using formula of width

Put the value into the formula


Hence, The width of the central bright fringe is 7.24 mm.