Answer:0.506 N
Explanation:
Given
Charge on first balloon
Charge on second balloon is
Distance between them
Electrostatic Repulsive force is given by
Where K is constant
Her daughter, nice brainteaser
Answer:
the tension in each side of the cable is 3677.57 N
Explanation:
given data
traffic light = 20 kg
cable between two poles = 30 m
sag in the cable = 0.40 m
solution
by the free body diagram
tan θ = .............1
θ = 1.527 °
and
tension = mg
The net force is along x - axis is express as
T2 cosθ = T1 cosθ .................2
so T2 - T1 ..............3
and
when we take it along y axis that is express as
( T1 + T2) sinθ = mg ...................4
so by equation 3 we put here
2 × T1 sin(1.527) = 20 × 9.8
T1 = 3677.57 N
Answer:
98J
Explanation:
Given parameters:
Mass of rock = 5kg
Height = 2m
Unknown:
Work done = ?
Solution:
The amount of work done is given as:
Work done = Force x distance
Work done = Weight x height
Work done = mgH
Now insert the parameters and solve;
Work done = 5 x 9.8 x 2 = 98J
Given:
The average temperature of the outer space near the earth is T_f=50.3 °F
To find:
Convert the given temperature to kelvin(K)
Explanation:
The temperature can be converted from degree Fahrenheit to kelvin using the formula,
On substituting the known values,
Final answer:
Thus 50.3 °F is equal to 283.17 K