Answer:
a) Vb = 4.65m/s at 25.46° due south of east
b) t = 119s
c) d = 238m
d) 28.43° due north of east.
e) Vb = 3.69m/s due east
f) t = 135.5s
Explanation:
Velocity relative to the earth is:
Vb = 4.65m/s < -25.46°
Since the distance to travel is 500m:
The distance on the y-axis is given by:
If the final position is directly east from the starting position:
From the y-components:
Solving for β:
β=28.43°
With this angle, the velocity would be:
Vb = 4.2*cos(28.43°) = 3.69m/s
And the time it would take it to cross:
t = 500/3.69 = 135.5s
Substance Y has more atoms per gram than substance W.
Explanation:
The best conclusion supported by the data suggests that substance Y has more atoms per gram compared to substance W:
Chart;
2.542 W
0.900 X
3.209 Y
1.657 Z
From the chart above see that Y has more specific heat W. This implies that Y will require more energy to raise the temperature of the substance compared to W.
Specific heat is the amount of heat required to raise the temperature of 1g of a substance by 1K.
The more the amount of matter per gram present, the more the specific heat it will have.
learn more:
Specific heat brainly.com/question/7210400
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Answer:
Acceleration will be equal to
Explanation:
We have given mass of the car m = 980 kg
Velocity of the car v = 37.4 km/hr = 10.4 m/sec
Power supplied by the engine P = 5500 watt
We know that power is rate of change of energy with respect to time
So
Energy is equal to energy = force × distance
So
From newtons second law force is equal to Force = mass × acceleration
So
So