Answer:
positive plate
E = 5.764 KV / m
W = 490eV or 7.85 * 10^-17 J
E_p = 4.74 *10^(-12) eV
E_k = 490 eV
Explanation:
part a
The potential difference between two plates = 490 V
Distance between two plates = 8.5 cm
Answer: The positive plate is at higher potential because of convention.
part b
Electric Field between the plates
E = V / d
E = 490 / 0.085 = 5.764 KV / m
Answer: Electric Field between the plates E = 5.764 KV / m
part c
Work done by electric field
W = V*q
W = 490 * 1.602*10^-19
W = 7.85 * 10^-17 J
or W = 490 eV
Answer: Work done by electric field W = 490eV or 7.85 * 10^-17 J
part d
Potential Energy of an electron gained:
E_p = m_e * g * d / (1.602*10^-19)
E_p = 9.109*10^-31* 9.81 * 0.085 / (1.602*10^-19)
E_p = 4.74 *10^(-12) eV
Very very small E_p approximately 0
Answer: Potential Energy of an electron gained E_p = 4.74 *10^(-12) eV or 0.
part e
Kinetic Energy of an electron gained:
W - E_p = E_k
E_k = 490eV - 4.74*10^(-12)eV
E_k = 490 eV
Answer: Kinetic Energy of an electron gained E_k = 490 eV
Density = (mass) / (volume)
4,000 kg/m³ = (mass) / (0.09 m³)
Multiply each side
by 0.09 m³ : (4,000 kg/m³) x (0.09 m³) = mass
mass = 360 kg .
Force of gravity = (mass) x (acceleration of gravity)
= (360 kg) x (9.8 m/s²)
= (360 x 9.8) kg-m/s²
= 3,528 newtons .
That's the force of gravity on this block, and it doesn't matter
what else is around it. It could be in a box on the shelf or at
the bottom of a swimming pool . . . it's weight is 3,528 newtons
(about 793.7 pounds).
Now, it won't seem that heavy when it's in the water, because
there's another force acting on it in the upward direction, against
gravity. That's the buoyant force due to the displaced water.
The block is displacing 0.09 m³ of water. Water has 1,000 kg of
mass in a m³, so the block displaces 90 kg of water. The weight
of that water is (90) x (9.8) = 882 newtons (about 198.4 pounds),
and that force tries to hold the block up, against gravity.
So while it's in the water, the block seems to weigh
(3,528 - 882) = 2,646 newtons (about 595.2 pounds) .
But again ... it's not correct to call that the "force of gravity acting
on the block in water". The force of gravity doesn't change, but
there's another force, working against gravity, in the water.
Answer:No
Explanation:
No
As the train is accelerating so train velocity will be more as compared to the ball and thus will cover more distance as compared to the ball.
When the ball is thrown upward with some velocity, it also possesses the train velocity at the time of throwing but as time passes velocity of train increases due to acceleration of the train. This causes the ball to fall behind the point of launch.
One way that the world's ocean affects weather and climate is by playing an important role in keeping our planet warm. ... The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation.
#10 when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and so it floats
