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Nina [5.8K]
3 years ago
6

if a ball on a string swung in a circles and string suddenly breaks.the ball will move into what direction?

Physics
1 answer:
Akimi4 [234]3 years ago
3 0

Answer: b

Explanation: did the quiz got it right

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Two objects, one having three times the mass of the other, are dropped from the same height in a vacuum. At the end of their fal
gogolik [260]

Answer:

Two objects will have the equal velocities but the forces on both of them will not be equal. The equal velocities of these objects are due to their equal acceleration.

Explanation:

From the newton's equation

v^{2} -u^{2} = 2as

so here we can say that velocity does not depends on the mass.

The acceleration of both objects will be same but not the forces because

F = Ma

As the force is depending on the mass so it will not be the same for both objects.

5 0
3 years ago
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Moment of inertia Wheel If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at
Vinil7 [7]

Answer:

0.113097335529 Nm

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

a = Acceleration

I = Moment of inertia = 0.3 kgm²

\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\dfrac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\dfrac{0-0.72\times 2\pi}{12}\\\Rightarrow \alpha=-0.376991118431\ rad/s^2

Torque is given by

\tau=I\alpha\\\Rightarrow \tau=0.3\times (-0.376991118431)\\\Rightarrow \tau=-0.113097335529\ Nm

The magnitude of torque is 0.113097335529 Nm

6 0
3 years ago
Two coils, held in fixed positions, have a mutual inductance of M = 0.0034 H. The current in the first coil is I(t) = I0sin(ωt),
tiny-mole [99]

Answer:

ε₂ =2.63 V

Explanation:

given,

M = 0.0034 H

I (t) = I₀ sin (ωt)

I (t) = 5.4 sin (143 t)

\dfrac{d i(t)}{dt} = \dfrac{d}{dt}(5.4 sin (143 t))

\dfrac{d i(t)}{dt} =143 \times 5.4 cos (143 t)

magnitude of the induced emf in the second coil

ε₂ =M\dfrac{di}{dt}

ε₂ =0.0034\times 143 \times 5.4 cos (143 t)

for maximum emf

cos (143 t) = 1

ε₂ =0.0034\times 143 \times 5.4

ε₂ =2.63 V

3 0
2 years ago
According to the Creative Curriculum model, the _____ sets the context for teaching and learning
vladimir2022 [97]

Answer:

A. structure of the classroom

Explanation:

According to the Creative Curriculum model, the _ structure of the classroom_ sets the context for teaching and learning.  

In creative curriculum model children learn through creative and active learning strategy. Creative curriculum are implemented through structure of classrooms. Creative curriculum stands to enhance skill of the the students and inculcate in them passion for learning.

3 0
3 years ago
Which of the following numbers is equal to an object's acceleration?
Elenna [48]
<span>C. the slope of that objects velocity-time graph

Hope it helps!
</span>
5 0
3 years ago
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