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denpristay [2]
3 years ago
12

How does a screw make the work of fastening two objects together easier? A. The screw changes the direction of a force - it conv

erts linear force into rotational force. It also reduces the force required - the closer the threads, the larger the input force required to get the same output force. B. The screw changes the direction of a force - it converts rotational force into linear force. It also reduces the force required - the closer the threads, the smaller the input force required to get the same output force. C. The screw changes the direction of a force - it converts rotational force into linear force. It also reduces the force required - the closer the threads, the larger the input force required to get the same output force. D. The screw changes the direction of a force - it converts linear force into rotational force. It also reduces the force required - the closer the threads, the smaller the input force required to get the same output force.
Chemistry
2 answers:
Pachacha [2.7K]3 years ago
3 0
<span>D. The screw changes the direction of a force - it converts linear force into rotational force. It also reduces the force required - the closer the threads, the smaller the input force required to get the same output force.</span>
Lapatulllka [165]3 years ago
3 0
The answer is <span>D. The screw changes the direction of a force - it converts linear force into rotational force. It also reduces the force required - the closer the threads, the smaller the input force required to get the same output force.</span>
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My answer is a
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5 0
3 years ago
what are the mole ratios of hydrazine (n2h4) to hydrogen peroxide (h2o2) and hydrazine to water? 1:2 and 1:4 1:3 and 1:4 1:2 and
Shalnov [3]
To determine the mole ratios of the substances, we need to know the balanced chemical reaction of the system. The reaction between hydrazine and hydrogen peroxide yields to nitrogen and water. The balanced chemical reaction is:

N2H4 + 2H2O2 --> N2 + 4H2O

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3 years ago
Which answer below correctly identifies the type of change and the explanation for the boiling of water?
Charra [1.4K]

Answer:

Physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved.

Explanation:

The gas formation seen is in fact the transition of the liquid water to a gas state, not the formation of a new gas.

8 0
3 years ago
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When the equation below is balanced with the smallest possible integer coefficients, what is the coefficient for PH3?
Vikki [24]

Answer:

The coefficient for PH3 is 8. Option D is correct.

Explanation:

Step 1: The unbalanced equation

P2H4(g) ⇆ PH3(g) + P4(s)

Step 2: Balancing the equation

P2H4(g) ⇆ PH3(g) + P4(s)

On the left side we have 4x H (in P2H4), on the right side we have 3x H (in PH3). To balance the amount of H on both sides, we have to multiply P2H4 on the left side by 3 and PH3 on the right by 4.

3P2H4(g ) ⇆ 4PH3(g) + P4(s)

On the left side we have 6x P (in 3P2H4) on the right side we have 8x P (4x in 4PH3 and 4x in P4). To balance the amount of P on bot hsides, we have to multiply 3P2H4 by 2 and 4PH3 also by 2. Now the equation is balanced

6P2H4(g ) ⇆ 8PH3(g) + P4(s)

The coefficient for PH3 is 8. Option D is correct.

5 0
4 years ago
the lenght of the rug is 46.3 in. qnd the width is 26.3in. what is the lenght of this rug measured in centimeters
telo118 [61]
The length of the rug in cm will be
46.3 in = 117.602 cm
7 0
4 years ago
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