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Natasha_Volkova [10]
3 years ago
9

Please help me! I don’t understand how to solve this problem.

Physics
1 answer:
skelet666 [1.2K]3 years ago
6 0

What's the weight of the pear ?

Weight = (mass) x (gravity) = (1 kg) x (9.8 m/s²) = 9.8 Newtons.

OK. We know there's a force of 9.8 Newtons acting downwards on the pear.

Is the pear accelerating ? No ! It's just laying there on the table.

If it's not accelerating, then we know that the net force on it must be zero.

So there must be ANOTHER force acting UPWARDS on it, to exactly

cancel out the downward force of its weight. THAT's the "normal" force ...

the upward force that the table exerts on the pear. It must also be 9.8N,

but UPwards, so that if you add it to the weight, the sum is zero.

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Cheese is made of casein protein, which is originally made from milk and is high in protein. The texture of the cheese is determined by the quality of the milk, so cow's milk cheese differs from goat's milk cheese.

<h3>What is a dairy product?</h3>

Diary products are made from milk, such as cheese, curd, yogurt, etc., but all of them have different nutrients. The quality of these dairy products depend upon the quality of the milk, as some milking animals have a higher concentration of fats in their milk than other animals. These dairy products are used in different industrial sectors, such as for making ice cream, chocolate, and different food products.

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8 0
1 year ago
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead, the pipe's diameter is 57.3 c
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Answer with Explanation:

We are given that

Diameter of pipe,d_1=0.573 m

v_1=13.5 m/s

v_2=5.83 m/s

Volume flow rate of the petroleum along the pipe=Q_{refinery}=A_1v_1=v_(\frac{\pi d^2_1}{4})

Q_{refinery}=13.5\times (\pi\times \frac{0.573)^2}{4})=3.48 m^3/s

By equation of continuity

A_1v_1=A_2v_2

\frac{\pi d^2_1}{4}v_1=\frac{\pi d^2_2}{4}v_2

d^2_2=\frac{v_1}{v_2}d^2_1

d_2=\sqrt{\frac{v_1}{v_2}}d_1

d_2=0.573\sqrt{\frac{13.5}{5.83}}

d_2=0.87 m

d_2=0.87\time 100=87 cm

1 m=100 cm

4 0
3 years ago
The electric field between two parallel plates connected to a 45-volt battery is 500. volts per meter. The distance between the
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Electric field = potential difference
                       -----------------------------
                        distance between plates
 
 Distance between plates   =         45
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                                           =          0.09 meters.

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64 meters from the base of the cliff.
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