Answer:
Energy dissipated = 13.453 Joules
Explanation:
In order to solve this problem, we first compute the gravitational potential energy the child has, and then find the kinetic energy at the lowest position.
The gravitational potential energy (relative to lowest position) is found as follows:
G.P.E = mass * gravity * height
Where, Height = 2 - 2 * Cos(34°)
Height = 0.3193 meters
G.P.E = 30 * 9.8 * 0.3193
G.P.E = 93.874 J
Kinetic energy:
K.E = 0.5 * mass * velocity^2
K.E = 0.5 * 30 * 2.31547^2
K.E = 80.421 J
Energy dissipated = G.P.E - K.E
Energy dissipated = 93.874 - 80.421
Energy dissipated = 13.453 J
Answer:
The electrostatic force between and electron and a proton is
Explanation:
It is given that, charge is placed at a distance from charge . The force acting between charges is given by :
We need to find the force if the distance between them is reduced to . It is given by :
So, if the the distance between them is reduced to , the new force becomes 16 times of the previous force.
The electrostatic force between and electron and a proton separated by 0.1 mm or is :
So, the electrostatic force between and electron and a proton is . Hence, this is the required solution.
Answer:
a
Explanation:
a push or a pull that occurs when an object interacts with another object or field.
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Answer:
Explanation:
Given that
An isotropic point source emits light at a wavelength = 500 nm
Power = 185 W
Radius = 380 m
Let's first calculate the The intensity of the wave , which is =
=
=
=
Now;
The amplitude of the magnetic field is calculated afterwards by using poynting vector
i.e
The magnetic field wave equation can now be expressed as;
Taking the differentiation
The maximum value ;
where ;
then
The maximum rate at which the magnetic component of the light changes with time at the detector's location is approximately Tesla per second (T/s).
To find the maximum rate at which the magnetic component of the light changes with time at the detector's location, you can use the formula for the rate of change of magnetic field due to an electromagnetic wave. The formula is given by:
Where:
is the rate of change of the magnetic field.
λ is the wavelength of the light.
E is the electric field strength.
c is the speed of light in a vacuum, approximately
You have the wavelength (λ) as 500 nm, which is 500 x 10^-9 meters, and the electric field strength (E) can be calculated using the power (P) and the distance (r) from the source. The power emitted by the source is 185 W, and the distance from the source to the detector is 380 m.
First, calculate the electric field strength (E):
Now, you can calculate the rate of change of the magnetic field:
So, the maximum rate at which the magnetic component of the light changes with time at the detector's location is approximatelyTesla per second (T/s).
Learn more about magnetic component of the light here:
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b.) the buoyant force in the water is larger than that in mercury
c.) the buoyant force in the water is zero and that in mercury is non - zero
d.) the buoyant force in the water is equal to that in mercury
e.) no conclusion can be made about the respective values of the buoyant forces
Answer: a)
Explanation:
The buoyant force, as stated by Archimedes’ principle, is equal to the weight of the liquid that occupies the same volumen as the submerged object, as follows:
Fb = δ.V.g
If this force is larger than the weight of the object (that means that the fluid is denser than the solid), the object floats, which is the case for silver and mercury.
Instead, silver density is larger than water density, which explains why the pure silver ingot sinks.
Finally, as mercury is denser than water, we conclude that for a same object, the buoyant force in mercury is larger than in water (exactly 13.6 times greater).