Answer:
0.358 kg
Explanation:
From simple harmonic motion,
T = 2π√(m/k)................ Equation 1
Where T = period of the spring, k = spring constant of the spring, m = mass suspended, π = pie
make m the subject of the equation
m = kT²/4π².................. Equation 2
Given: k = 15 N/m, T = 0.97 s, π = 3.14
Substitute into equation 2
m = 15(0.97²)/(4×3.14²)
m = 14.1135/39.4384
m = 0.358 kg.
Hence mass suspended = 0.358 kg
When the surface of the comb rubs on your hair, the comb is electrically charged. When the comb comes close to the paper, the charge on the comb causes charge separation on the paper bits. Since paper is neutral, positive and negative charges are equivalent. The charge on the comb charges the area of the bit of paper nearest the comb to the opposite. Thus, the bits of paper become attracted to the comb.
Answer:
Power = Energy/time
Energy = Power xtime.
Time= 20hrs
Power = 100Watt =0.1Kw
Energy = 0.1 x 20 = 2Kwhr.
This Answer is in Kilowatt-hour ...
If the one given to you is in Joules
You'd have to Change your time to seconds
Then Multiply it by the power of 100Watts.
Answer:mechanical waves.
Explanation:
Mechanical waves require the particles of the medium to vibrate in order for energy to be transferred. For example, water waves, earthquake/seismic waves, sound waves, and the waves that travel down a rope or spring are also mechanical waves.
Answer:
The Answer Is A,C,D
Explanation:
The gravitational pull from the moon make bigger waves'
There would be no moon for eclipses
There would be more sun and no moon