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Darya [45]
3 years ago
12

At 7.0°c, the volume of a gas is 49 ml. at the same pressure, its volume is 74 ml at what temperature?

Physics
1 answer:
Rashid [163]3 years ago
8 0
So i converted everything first; 
<span>7.0 C ---> 280 K </span>
<span>49 mL---> 0.049 L </span>
<span>74mL---> 0.074 L </span>
<span>THEN I tried setting it up by the combined law formula which is P1V1/T1=P2V2/T2 </span>
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The coefficients of static and kinetic frictions for plastic on wood are 0.50 and 0.40,respectively. How much horizontal force w
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The horizontal force needed to start the calculator moving from rest is 1.5 N

What is Kinetic friction?

It is defined as a force that acts between moving surfaces.

The magnitude of the force will depend on the coefficient of kinetic friction between the two materials.

Here,

weight of calculator, N = 3 N

The coefficients of static frictions, µ (static) = 0.50

The coefficients of kinetic frictions, µ (kinetic) = 0.40

Now,

The horizontal force required = The static friction force

F = µ (static) * weight of calculator

F = 0.50 * 3.0

F = 1.5 N

Hence,

The horizontal force needed to start the calculator moving from rest is 1.5 N

Learn more about   horizontal force here:

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2 years ago
Which of the following are true statements about the electric field? a. A moving charge produces a magnet anomaly. b. The electr
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Answer:

a,b,c,d,,f, g, j

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i) capacitors' plates are charged and an electric field exists between the plates.

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Starting at 1.3 m/s, a runner accelerates at a constant 0.22 m/s2 for 6.0 s. What is the runner’s displacement during this time
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If we assume that, in the African savanna, the predator population remains constant, what other, nonmobile, factor would influen
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A ball of mass 0.35 kg hangs straight down on a string of length 13 cm. It is then swung upward, keeping the string taut, until
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Answer:

PE=0.29J

Explanation:

According to the description, there is a angle and in point swung upward of 70°

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Y=13*10^{-2}*cos(70) \\Y=0.0444m

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