Answer:
L = mp*v₀*(ms*D) / (ms + mp)
Explanation:
Given info
ms = mass of the hockey stick
uis = 0 (initial speed of the hockey stick before the collision)
xis = D (initial position of center of mass of the hockey stick before the collision)
mp = mass of the puck
uip = v₀ (initial speed of the puck before the collision)
xip = 0 (initial position of center of mass of the puck before the collision)
If we apply
Ycm = (ms*xis + mp*xip) / (ms + mp)
⇒ Ycm = (ms*D + mp*0) / (ms + mp)
⇒ Ycm = (ms*D) / (ms + mp)
Now, we can apply the equation
L = m*v*R
where m = mp
v = v₀
R = Ycm
then we have
L = mp*v₀*(ms*D) / (ms + mp)
Answer:
Unbalanced forces
Explanation:
Unbalanced forces acting on an object can change the object's speed, causing it to speed up or slow down.
A 60-w power lightbulb uses 0.5 amps of electricity when connected to a 120-v home line.
Calculation:
Provided that,
Power, P = 60 w
Voltage, V = 120 v
We have to find out the current or electricity consumption, I.
We know that Power (P)is equal to the voltage(V) divided by current(I), or
P = VI
⇒I = P/ V [when power is divided by voltage we get current]
⇒I = 60 / 120
⇒I = 0.5 amp
Therefore from the above calculation, it is concluded that when a 60 w bulb is operating on a 120 v line, it consumes 0.5 amp current.
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The temperature rises of in the block if the current flows for 10 minutes is, 34.78K.
To find the answer, we need to know about the power of the electric heater.
<h3>How to find the temperature rise of in the block if the current flows for 10 minutes?</h3>
- We have given with the variables,
- We have an expression the heat given to the system as,
ΔT
- We have to find the temperature rise ΔT,
ΔT
Thus, we can conclude that, the temperature rises in the block if the current flows for 10 minute is 34.78K.
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Answer:
The wave length of the string = 10 cm or 0.1 m
Explanation:
Wave: A wave can be defined as a disturbance, which travels through a medium and transfer energy from one point to another, without causing any permanent displacement of the medium itself.
The velocity, frequency and wavelength of a wave is related as shown,
v = λf ........................ Equation 1
Where v = velocity of the wave, λ = wave length, f = frequency.
λ = v/f ..................... Equation 2.
Given: v = 10 cm/s,
T = 2t, where t = 0.5 s, (This is half of one cycle)
T = 2×0.5 = 1 s,
But T = 1/f = 1/1 = 1 Hz.
Substituting these values into equation 2
λ = 10(1)
λ = 10 cm. or 0.1 m
Thus the wave length of the waves = 10 cm or 0.1 m