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3 years ago

A ball is spun around in circular motion such that it completes 50 rotations in 25 s.

Physics

1 answer:

Leokris [45]3 years ago

3 0

Answer:

(A) The period of its rotation is 0.5 s (2) The frequency of its rotation is 2 Hz.

Explanation:

Given that,

a ball is spun around in circular motion such that it completes 50 rotations in 25 s.

(1). Let T be the period of its rotation. It can be calculated as follows :

$T=\dfrac{25}{50}\\\\T=0.5\ s$

(2). Let f be the frequency of its rotation. It can be defined as the number of rotations per unit time. So,

$f=\dfrac{50}{25}\\\\f=2\ Hz$

Hence, this is the required solution.

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4 years ago

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A 120 W lightbulb and a 90 W lightbulb each operate at a voltage of 120 V. Part A Which bulb carries more current? Which bulb ca

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Answer:

120 W lightbulb

Explanation:

Let the two lightbulb be A and B respectively.

Given the following data;

Power A = 120W

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To find the current flowing through each lightbulb;

a. For lightbulb A

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3 years ago

The north pole of a bar magnet is rapidly introduced into a solenoid at one end (say A). Which of the following statements corre

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Answer:

The correct option is;

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Explanation:

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3 years ago

In an experiment, it took 300s to increase the temperature of 0.1kg of the liquid from 25°C to 50°C. During this period, the ene

klemol [59]

Answer:

<h2>4000 $\textbf{J}\text{ }\textbf{kg}^{\textbf{-1}}\text{ }\textbf{K}^{\textbf{-1}}$ </h2>

Explanation:

The temperature of 0.1 kg of liquid rises from 25°C to 50°C in 300 sec. Energy of 13,600 J was supplied during this time. Appartus was losing energy at the rate of 12 J/sec.

Let us assume the Specific heat capacity as $s$ .

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