Answer:
Explanation:
Given that
Intensity I
Radius of earth,R = 6370 Km
We know that surface area of earth, A
As we know that pressure due to intensity given as
V =Velocity of light
We know that force F
F = P .A
b)Gravitational force F
So F
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Answer:
36N
Explanation:
First draw a diagram so you can see which forces act in which direction.
Then define which is your positive direction. I chose the direction of accelleration (downward) to be positive. This means that the weight of the object is also acting in the positive direction but Tension is acting in the negative direction.
If the elevator which contains the object within is accellerating at 2.6 ms^-2 then the object and string system is also accellerating at the same rate.
F = ma where F is the resultant force.
Resultant for is Weight + Tension but tension is in the negative direction so
F = mg -T
F = 5g - T
F = ma so F = 5 x 2.6
13 = 5g-T
T = 5g - 13
T = 36N
(I've taken g = 9.8ms^-2 but if this is for a physics class I'd take it to be 9.81ms^-2)
The angular velocity of the stepped cylinder is determined as 2.35 rad/s.
<h3>Centripetal acceleration of the cylinder</h3>
The centripetal acceleration of the cylinder is calculated as follows;
F = ma
a = F/m
a = 40/ 36
a = 1.11 m/s²
<h3>Velocity of the cylinder</h3>
a = v²/r
v² = ar
v² = 1.11 x 0.2
v² = 0.222
v = 0.47 m/s
<h3>Angular velocity of the cylinder</h3>
v = ωr
ω = v/r
ω = 0.47/0.2
ω = 2.35 rad/s
Learn more about angular velocity here: brainly.com/question/6860269
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Answer:
a = 3.33 m/s²
Explanation:
The horizontal acceleration of the dog can be found by using Newton's Second Law of Motion as follows:
F = ma
where,
F = Unbalanced force applied on the dog = 11 N - 10 N = 1 N
m = mass of the dog = 0.3 kg
a = horizontal acceleration of dog = ?
Therefore,
1 N = 0.3 kg(a)
a = 1 N/0.3 kg
<u>a = 3.33 m/s²</u>