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shepuryov [24]
3 years ago
5

What are the two factors that determine the period of a pendulum? acceleration of gravity and the mass of the bob mass of the bo

b and length of the string length of the string and acceleration of gravity acceleration of gravity and angle of the swing
Physics
2 answers:
V125BC [204]3 years ago
8 0
<span>The two factors which determine the period of a pendulum is:

A) Length of the string
B) Acceleration of gravity

In short, Your Answer would be Option C

Hope this helps!</span>
Artist 52 [7]3 years ago
7 0
<h3><u>Answer</u>;</h3><h3> length of the string and acceleration of gravity </h3><h3>Explanation;</h3>
  • Period, T, refers to the  time taken for one complete oscillation.
  • The period T of a pendulum is affected by the following factors;  
  1. The length of the pendulum or the length of the string; such that the longer the length of the pendulum, the longer the period.
  2. The acceleration of gravity or the gravitational field strength; such that the greater the gravitational acceleration the shorter the period.

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The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to air resistance and the u
irinina [24]

Explanation :

The forces acting on hot- air balloon are:

Weight, (W)

Force due to air resistance, (F)

Upthrust force, (U)

Its weight W is acting in downward direction. The upthrust force U acts in upward direction. When the balloon is moving upward, the air resistance is in downward and vice versa.

In this case, the hot-air balloon descends vertically at constant speed.

so, a=0

and F=ma=0

so, W = F + U ....................(1)

when it is ascending let the weight that it is releasing is R, so

(W-R) + F = U..........(2)

solving equation (1) and (2)

(W-R)+F=W-F

R=2F            

2F is the weight of material that must be released from the balloon so that it ascends vertically at the same constant speed.

7 0
3 years ago
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What is the difference between convex and concave mirrors and lens?
Sidana [21]
Concave makes things smaller and convex makes things bigger
5 0
3 years ago
Can a person run at a speed of 20 meters per second
tensa zangetsu [6.8K]

Answer:

No

Explanation:

The fastest recorded time for a person to run 100 metres is 9.58 seconds, which is the equivalent of 10.4 metres per second

6 0
2 years ago
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A line from the Brackett series of hydrogen has a wavelength of 1945nm (or 1.0979x10^7m). From which state did the electron orig
Zarrin [17]
We use the Rydberg Equation for this which is expressed as:

<span>1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
</span>
where lambda is the wavelength, where n represents the final and initial states. Brackett series means that the initial orbit that electron was there is 4 and R is equal to 1.0979x10^7m<span>. Thus,
</span>
1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
1/1.0979x10^7m = 1.0979x10^7m [ 1/(n2)^2 - 1/(4)^2]

Solving for n2, we obtain n=1.
5 0
3 years ago
if a man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s squared. what amount of force acted on the ball?
kkurt [141]

F = ma

We have mass = 0.2kg

and acceleration = 20 m/s^2

So..

F = (0.2)(20)

F = 4 N

6 0
3 years ago
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