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BigorU [14]
3 years ago
10

The tension in the cable is 100N find the mass of the ball

Physics
1 answer:
zaharov [31]3 years ago
7 0

The correct answer of this question is : 10.2 Kg.

EXPLANATION :

As per the question, the ball is attached to the cable.

The tension produced in the cable when the ball is hanged from it, is equal to the weight of the ball. It is so because the cable maintains its equilibrium.

Hence, tension in the cable = weight of the ball.

The tension produced in the cable is given as T = 100 N.

The weight of the ball is equal to the product of mass with acceleration due to gravity.

Let the mass  of the ball is m.

Hence, weight of the ball W = mg

Here, g is known as acceleration due to gravity, and its value is g = 9.8\ m/s^2.

From above, we know that W = T

                                           ⇒ mg = 100 N

                                           ⇒ m = \frac{100}{g} Kg

                                                    = \frac{100}{9.8}\ Kg

                                                    = 10.2 Kg.              [ans]

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NISA [10]

Answer:

B = 0.8 T

Explanation:

It is given that,

Radius of circular loop, r = 0.75 m

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We need to find the magnitude of the uniform magnetic field exerting this torque on the loop. Torque acting on the loop is given by :

\tau=NIAB\sin\theta

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B=\dfrac{\tau}{NIA\sin\theta}\\\\B=\dfrac{1.8}{1\times \pi \times (0.75)^2\times 3\times \sin(25)}\\\\B=0.8\ T

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6 0
3 years ago
Three-fourths of the area of a rectangular lawn 30 feet wide by 40 feet long is to be enclosed by a rectangular fence. If the en
satela [25.4K]

Answer:

The fence is 5feet less.

Explanation:

We need to determine

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When full length will be fenced, and reduced width will be fenced

Length = 40 feet40 * W = 30 * 30W = 22.5 feetLength of fence needed = 2(40 + 22.5) = 125 feet

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4 0
4 years ago
If a microwave oven produces electromagnetic waves with a frequency of 2.30 ghz, what is their wavelength?
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Rearranging, \lambda = \frac{c}{f}

Plug in the values,

\lambdam = \frac{3 \times 10^8 m/s}{2.30 GHz\frac{10^9 Hz}{1 GHz}}=0.130 m\frac{10^9 nm}{1 m} = 1.30 \times 10^8 nm.

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