Answer:
the acceleration of object is 3m/1s
Because when you open the faucet, you want the water to
rush out with pressure, not just dribble or ooze out. The
water has to be supplied to the user with pressure. Either
you supply it from a height, or else you'll need to use pumps
to make the pressure.
Length of the pendulum (l) = 2 m
Acceleration due to gravity = g = 9.8 m/s^2
For small amplitude, the pendulum will undergo simple harmonic motion.
Hence, the time period of the pendulum for small amplitude = 
Now, plug the values of l and g
T = 
T = 2 × 3.14 × 0.451
T = 2.83 seconds
Hence, the time period of the pendulum for small amplitude = 2.83 s
A. Reflective
The light reflects off the ice
Hope this helped
Answer:
the maximum possible coefficient performance is 13.7
Explanation:
inside temperature,
= 61 F = 289.26 K
outside temperature,
= 99 F = 310.37 K
coefficient of performance, COP (real) = 3.2
according to Carnot's theorem, the coefficient of performance is
= 
where
is cold temperature
is hot temperature
thus,
= 
= 13.7