Answer:
a. The balls initial kinetic energy.
Explanation:
As we know that initially speed is given to the ball downwards so that it moved in a circle so then finally reached to point B
Now given that point B is higher than the initial position A from which it is projected
Now by energy conservation we know that
since final speed is zero so we have
so from above equation we can say that since initial kinetic energy is given to the ball so it will be able to reach the point which is higher than its initial position
so correct answer is
a. The balls initial kinetic energy.
Here we have perfectly inelastic collision. Perfectly inelastic collision is type of collision during which two objects collide, stay connected and momentum is conserved. Formula used for conservation of momentum is:
In case of perfectly inelastic collision v'1 and v'2 are same.
We are given information:
m₁=0.5kg
m₂=0.8kg
v₁=3m/s
v₂=2m/s
v'₁=v'₂=x
0.5*3 + 0.8*2 = 0.5*x + 0.8*x
1.5 + 1.6 = 1.3x
3.1 = 1.3x
x = 2.4 m/s
For the given wave speed, the frequency is 2.0 Hz
<h3>What is frequency?</h3>
The frequency is the number of cycles per second in the sinusoidal wave.
Given is the length of the string L = 40cm, the wave speed v =320 cm/s, then the wavelength is
λ =4L
λ =4 x 40 cm =160 cm.
The frequency is related to the wavelength as
f =v/λ
f =320/160
f=2.0 Hz
Thus, the frequency is 2.0 Hz.
Learn more about frequency.
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The cats have full bowls in the morning and afternoon, Katy can assume that the cats do not eat in the morning or afternoon. The bowls are replenished in the evening, which suggests that they become empty in the evening, which suggest that the pattern is that the cats eat in the evening so your answer would be C. Hope this helps. ;)
Answer:
Explanation:
L = Initial length of segment = 79 m
T = Normal temperature = 
l = Width to be left for expansion
= Coefficient of linear expansion of the material = 
= Maximum temperature = 
= Change in temperature = 
The expression of linear expansion is given by
The expression for the minimum gap distance l the engineers must leave for a track rated at temperature is
