Answer:
Earth's mass is 5.98 x 1024 kg and has a radius of 6.37 x 106 m. 8.06 N/kg ... what would be the weight of a 70.0-kg student on the surface of Jupiter?Explanation:
Answer:
The boat will move in the direction of the force exerted.
Explanation:
To describe the motion of the boat, we shall first obtain the net force acting on the boat. This can be obtained as illustrated below:
From the question given above, the following data were obtained:
Force exerted (Fₑ) = 300 N
Resistive force (Fᵣ) = 250 N
Net force (Fₙ) =?
Fₙ = Fₑ – Fᵣ
Fₙ = 300 – 250
Fₙ = 50 N
Thus, the net force acting on the boat is 50 N in the direction of the force exerted.
Since the net force is in the direction of the force exerted, the boat will move in the direction of the force exerted..!
Power = (work) / (time)
Work = (power) x (time)
= (4 watts) x (8 hours)
1 "watt" = 1 joule/sec .
Work = (4 joule/sec) x (8 hours) x (3,600 sec/hr)
= (4 x 8 x 3,600) joules = 1,024 joules .
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Another way:
4 watts = 0.004 kilowatt
Work = energy = (power) x (time)
= (0.004 kw) x (8 hrs) = 0.032 kilowatt-hour .
Answer:
Explanation:
ME initial = ME final
PE initial + KE initial = PE final + KE final
There's no kinetic energy the moment Jorge is at the top of the ramp therefore KE initial = 0
PE initial = PE final + KE final
Assuming the bottom of the ramp is h = 0 we can then say PE final = 0
PE initial = KE final
Write the equations out.
mgh = (.5)mv^2
They tell us potential energy is 6000J therefore that portion of the equation is already "solved"
6000 = (.5)mv^2
Plugin the values
6000 = (.5) 70 v^2
Solve for v
6000 = 35v^2
171.43 = v^2
13.1 = v at the bottom of the slope
Solving for KE we get
(.5) m v^2
Plugin the value from the previous problem and solvee!
The answer is True
Burning fossil fuels DOES causes more air pollution than soil erosion, dust storms, and forest fires