Answer:
A) False
B) False
C) True
D) True
E) True
Explanation:
A) The formula for tangential speed v in term of angular speed ω and radius of rotation r is
So if the angular speed is constant and 0, the tangential speed is also 0. A) is false
B) False because of the centripetal acceleration:
C) True because of the formula for tangential acceleration in term of angular acceleration α is
D) True because same as D), if it has angular acceleration, it would have a tangential acceleration. Also from B) the centripetal acceleration will come with time as soon as angular speed is generated by angular acceleration.
E) True and same explanation as from B)
when water in a metal pot is heated over a campfire. Primarily, by means of convection energy transfer is thermal energy moved from the fire to the bottom of the pot
<h3 /><h3>What is thermal energy?</h3>
It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
Thermal energy can flow by different means such as conduction, convection, and radiation.
As given in the problem when water in a metal pot is heated over a campfire. The energy we receive around the campfire is mostly due to the effect of the radiation of the heat but the Primary means of energy transfer is thermal energy moved from the fire to the bottom of the pot because of the convection.
Thus, when water is heated in a metal pot over a campfire. Thermal energy is primarily transferred from the fire to the bottom of the pot through convection.
Learn more about thermal energy from here
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Answer:
on the planet
on earth
Explanation:
Given:
- initial velocity of the tool before pushing,
- force applied on the tool,
- displacement of the tool,
- time taken for the displacement,
- height of releasing the tool,
- time taken by the tool to fall on the ground,
<u>Now using the equation of motion:</u>
where:
a = acceleration of the object
Now the mass of the tool:
<u>Using the equation of motion when the tool is dropped:</u>
here:
g = acceleration due to gravity on the planet
Weight of the tool in the planet:
Weight of the tool on the earth:
Answer:
Inheritance from parents who have or had the disease