Jake drops a book out of a window from a height of 10 meters. The velocity does the book hit the ground is 14 m/s. hence option C is correct.
Velocity is defined as the pace at which an item changes position while moving in one direction, as seen from a certain point of view and as measured by a specific unit of time. Given that it has both a magnitude and a direction, velocity is a vector quantity. Velocity measures movement that begins in one location and moves to another location.
We are aware that V=final velocity and V2-U2=2.
U is the initial velocity, and A is the acceleration, and D is the distance, therefore V=14 m/s.
Thus, Jake drops a book out of a window from a height of 10 meters. The velocity does the book hit the ground is 14 m/s. hence option C is correct.
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The magnetic force on the wire will be directed to the east.
The direction of the magnetic force on the long wire carrying a current toward the north in a magnetic field directed vertically downward would be to the east.
This is because of the right-hand rule, where if you point your right thumb in the direction of the current and your fingers in the direction of the magnetic field, the resulting force would be perpendicular to both, pointing to the east in this case.
When a long wire carries a current toward the north in a magnetic field that is directed vertically downward, you can determine the direction of the magnetic force on the wire using the right-hand rule.
Step 1: Point your right thumb in the direction of the current (north).
Step 2: Curl your fingers in the direction of the magnetic field (downward).
Step 3: The direction of the force on the wire will be the direction your palm is facing.
Following these steps, the magnetic force on the wire will be directed to the east.
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Answer: these regions of darkness are due to no stars being in these regions of the night sky
Answer:
The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm
Explanation:
The given parameters are;
The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm
The temperature coefficient of resistance of tungsten = 0.004/°C
The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;
R₂ = R₁·[1 + α·(t₂ - t₁)]
Where;
R₁ = The resistance at the initial temperature = 12 ohm
R₂ = The resistance of tungsten at the final temperature
t₁ = The initial temperature = 15 degrees Celsius
t₂ = The final temperature = 80 degrees Celsius
α = temperature coefficient of resistance of tungsten = 0.004/°C
Therefore, we have;
R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm
The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.
B. a group of stars
C. an entire galaxy
D. one single planet
Answer: A yo-yo in someone's hand
Explanation:
Potential energy is the energy possessed by a body due to virtue of its position. Kinetic energy is the energy possessed by the body due to virtue of its motion.
A swimmer kicking their legs, a car driving on the road, an arrow flying at a target possess kinetic energy because of their motion. A yo-yo in someone's hand possess elastic potential energy.
Answer:
The answer is D
Explanation:
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