3 years ago

Which is equal to 4 hectometers?

Physics

1 answer:

liberstina [14]3 years ago

5 0

B: 0.4 kilometers ...

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An engine applies a force of 500 N on a car for a distance of 275m How much work is done?

weeeeeb [17]

Answer: 137500 J = 138 kJ

Explanation: work W= F·s= 500 N · 275 m

3 0

3 years ago

Using the solubility curve above, what is the solubility of KBr when the temperature is 80°C?

kenny6666 [7]

Answer:

96 g/100 g water

Explanation:

Kindly find the graph attached.

A solubility curve expresses how soluble a solute is at a given temperature in a particular solvent.

Solubility varies with temperature changes.

The x-axis denotes temperature and the y-axis is the solubility axis.

The solubility curve of KBr is the green line. Locate the given temperature on the x-axis and find the y-ordinate when it hits the curve.

The value gives solubility at that temperature.

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4 years ago

Two spherical point charges each carrying a charge of 40 μC are attached to the two ends of a spring of length 20 cm. If its spr

PolarNik [594]

Answer:

$x=3$

Explanation:

From the question we are told that:

Charge $Q=40 \mu C$

Length $L=20cm=0.20m$

Spring constant $k=120Nm^{-1}$

Generally the equation for Force between Charges is mathematically given by

$F=k\frac{q_1 q_2}{r^2}$

$F=9*10^9\frac{40*10^{-6}^2}{0.2^2^2}$

$F=360N$

Therefore

$F=kx$

$x=\frac{F}{k}$

$x=\frac{360}{120}$

$x=3$

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3 years ago

Please please answer click on image to see full pic

NISA [10]

Hope this may help you

4 0

3 years ago

How is sound produced? Name its three<br>characteristics.

nydimaria [60]

Answer:

1.loudness

2.pitch

3.shrillness

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4 years ago