Answer: The yellow light with a frequency equal to 5.21 x 1014 Hz will have a wavelength of E) 576 nm
At an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
Generally, acceleration is defined as the change in velocity per change in time of motion.
<em>Acceleration</em> of an object at any given time, t, can be calculated using the following equations below;
where;
- <em>v is final velocity at t₂</em>
- <em>u is the initial velocity at t₁</em>
- <em>t₂ is the final time of motion</em>
- <em>t₁ is the initial time of motion</em>
From the formula above, we can conclude that at an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
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Sunspots<span> are temporary phenomena on the </span>Sun<span>'s photosphere that appear as </span>spots<span> darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. </span>Sunspots<span> usually appear in pairs of opposite magnetic polarity.
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Answer:
Explanation:
Given data
Change in velocity Δv=14 m/s
Acceleration a=1000 m/s²
Required
Time t
Solution
We know that the acceleration is given by the velocity change over time interval.Therefore
a=Δv/t
Substitute the given values to find time t
So
Answer:
The astronaut can throw the hammer in a direction away from the space station. While he is holding the hammer, the total momentum of the astronaut and hammer is 0 kg • m/s. According to the law of conservation of momentum, the total momentum after he throws the hammer must still be 0 kg • m/s. In order for momentum to be conserved, the astronaut will have to move in the opposite direction of the hammer, which will be toward the space station.
Explanation: