Explanation:
As the force is given as 5.30 kN or 
. Hence, mass will be calculated as follows.
= mg
m = 540.816 kg
(a) At the top, centripetal force 
is acting upwards and the weight of the riders and car, will be acting downwards.
Therefore, force on the car by the boom will be calculated as follows.
or, 
= 
= 4715.919 N
Hence, the force 
on the car from the boom is 4715.919 N. This means that the car will be hanging on the boom and the boom will exert an upward force.
(b) Now at the top, centripetal force will be acting upwards and the weight of cars and car riders will be acting in the downwards direction.
Hence, we will calculate the force on car by the boom as follows.
or,
= 
= -3533.33 N
Therefore, car will be pushing on the boom and the boom will exert a downward force.
Answer:
Regions near rivers have water surfaces that rapidly change in temperature from cold to hot.
you have your own answer i only selected which is suitable for me . none of them is wrong they re excellent
Answer:
The rate at which velocity changes.
Explanation:
Acceleration is when motion changes, it is the rate at which velocity changes.
Answer:
the claim is not valid or reasonable.
Explanation:
In order to test the claim we will find the maximum and actual efficiencies. maximum efficiency of a heat engine can be found as:
η(max) = 1 - T₁/T₂
where,
η(max) = maximum efficiency = ?
T₁ = Sink Temperature = 300 K
T₂ = Source Temperature = 400 K
Therefore,
η(max) = 1 - 300 K/400 K
η(max) = 0.25 = 25%
Now, we calculate the actual frequency of the engine:
η = W/Q
where,
W = Net Work = 250 KJ
Q = Heat Received = 750 KJ
Therefore,
η = 250 KJ/750 KJ
η = 0.333 = 33.3 %
η > η(max)
The actual efficiency of a heat engine can never be greater than its Carnot efficiency or the maximum efficiency.
<u>Therefore, the claim is not valid or reasonable.</u>
Formula Density= mass/volume
- Find Volume (V)
1cm x 1cm x 1cm= 1cm3
- Find Density (D)
D= 2g/1cm3
= 2g/cm3
