Generator bc. It makes light
Answer:
These planets rotate around the sun in a circular path. Likewise in a heliocentric model it is believed that the sun is at the center of the universe and the planet earth along with all other planet move around it. Thus in both geocentric model and heliocentric model bodies in space move in circular orbits.
<u>Answer:
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Average speed, over the first 4.0 s of its motion, of a pebble released from rest off a bridge = 19.6 m/s
<u>Explanation:
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We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this case the initial velocity of body = 0 m/s, acceleration = 9.8 , we need to calculate displacement when t = 4 seconds.
Substituting
So a distance of 78.4 meter has been traveled by pebble in 4 seconds.
Average speed = 78.4/4 = 19.6 m/s
Answer:
Explanation:
Assume that the bullet is shot at a velocity of (v m/s) and it will take t time to pass the second plate.
by the definition of then angular velocity (ω)
ω=\frac{angular displacement}{time }[/tex]
Lets find the time to turn the next plate by 12 degrees , using θ=ωt
]t=\frac{12}{8995.5} =1.334*10^{-3}[/tex]
the bullet has to travel 80cm in this much of time to make a hole in the second plate. We can find the speed using this equation
(we have to convert cm into meters first)
Answer:
recall that heat absorbed released is given by
Q = mc*(T2 - T1)
where
m = mass (in g)
c = specific heat capacity (in J/g-k)
T = temperature (in C or K)
*note: Q is (+) when heat is absorbed and (-) when heat is released.
substituting,
Q = (480)*(0.97)*(234 - 22)
Q = 98707 J = 98.7 kJ
Explanation: