Explanation:
MA of a machine is its mechanical advantage.
Mechanical advantage is the ability of a machine to multiply force so as to get a work done.
- This is done by minimizing effort and maximizing the load or output.
- A MA of a simple machine with a value of 3 suggests that such a machine will multiply input force by a factor of 3.
- Therefore, such a machine will amplify the force input into the system.
Answer:
<h2>12 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 1.5 × 8
We have the final answer as
<h3>12 g</h3>
Hope this helps you
Answer:
The total Mechanical energy will be zero
Explanation: Escape velocity is the velocity required by a free object in order to overcome the impact of the force of gravity. The total mechanical energy of an object is the total energy possessed by an object which includes its kinectic and potential energy.
since the object is moving at an escape velocity which is 11.2m/s the object will be assumed to be weightless
Etotal = kinetic energy + potential energy
kinetic energy= 1/2*M*V*V
Potential energy=MGH
Etotal=1/2*0*11.2*11.2+0*0*0
Etotal=0+0
Etotal=0.
The correct answer to the question is 8.33 minutes.
CALCULATION:
The distance of earth from sun s = 150 million km.
We know one million = 10 lakh = 
Also 1 km = 
Hence, the distance s = 
= 
The speed of light c = 300,000 km per second
= 
We are asked to calculate the time.
The time of the reaching earth is calculated as -
We know one minute = 60 second.
Hence, 500 seconds = 
= 
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