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MaRussiya [10]
3 years ago
13

Precautions taken when doing experiment on simple pendulum​

Physics
1 answer:
olchik [2.2K]3 years ago
7 0

Answer:

1.)The bob of pendulum should be displaced with a small angle.

2) The amplitude of the oscillation of a simple pendulum should be small.

3) Fans should be switched off to reduce the air resistance.

4)The simple pendulum should be oscillate in a vertical plane

Hope this helped you

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In a race, Usain Bolt accelerates at
jeka94

Answer:

65.87 s

Explanation:

For the first time,

Applying

v² = u²+2as.............. Equation 1

Where v = final velocity, u = initial velocity, a = acceleration, s = distance

From the question,

Given:  u = 0 m/s (from rest), a = 1.99 m/s², s = 60 m

Substitute these values into equation 1

v² = 0²+2(1.99)(60)

v² = 238.8

v = √238.8

v = 15.45 m/s

Therefore, time taken for the first 60 m is

t = (v-u)/a............ Equation 2

t = (15.45-0)/1.99

t = 7.77 s

For the final 40 meter,

t = (v-u)/a

Given: v = 0 m/s(decelerates), u = 15.45 m/s, a = -0.266 m/s²

Substitute into the equation above

t = (0-15.45)/-0.266

t = 58.1 seconds

Hence total time taken to cover the distance

T = 7.77+58.1

T = 65.87 s

3 0
3 years ago
Which label belongs in the area marked X? Current Magnetic field Solenoid Force on wire
crimeas [40]

when we need to represent the magnetic field in a specific region where it is given that magnetic field lines are perpendicular to the plane and going inside the plane then we always use the concept of representation by "X"

here this symbol represents that field lines are going into the plane

it is also the uniform magnetic field always

so the correct answer would be

<u>Magnetic Field</u>

8 0
3 years ago
Read 2 more answers
Evaporation only occurs at the surface of a liquid
Veseljchak [2.6K]

yes

evaporation starts on the surface

8 0
4 years ago
Consider five charged particles: A,B,C,D,and E.
Kisachek [45]

Answer:

A_negative

B_positive

C_positive

D_positive

E_negative

Explanation:

according to the law of electrostatic which is

like charge repels and unlike charge attract.

3 0
4 years ago
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If a textbook weighs 37.2 N on Venus, and the book has a mass of 4.4 kg, what is the strength of gravity on Venus?
Romashka [77]

F=ma

Where F is force, m is mass and a is acceleration.

37.2N=4.4kg\cdot a\Longrightarrow a=\dfrac{37.2N}{4.4kg}=\boxed{8.45\dfrac{m}{s^2}}

Hope this helps.

r3t40

4 0
3 years ago
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