Mainly because he was Johnny Carson's advisor and consultant
on space, astronomy, and science in general, and he appeared
on The Tonight Show Starring Johnny Carson many times.

6 0

3 years ago

When you observe a physical property the substance

Amanda [17]

<span>The observation or measurement of physical properties of matter does not change its composition or its chemical nature. Other examples of physical properties include the infrared spectrum, attraction or repulsion to magnets, viscosity and opacity.</span>

5 0

3 years ago

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Ciara is swinging a 0.015 kg ball tied to a string around her head in a flat, horizontal circle. The radius of the circle is 0.5

Marat540 [252]

Answer:

Option C

Explanation:

From the question we are told that:

Mass $m=0.015kg$

Radius $r=0.5m$

Time $t=0.70$

Generally the equation for Tension is mathematically given by

$T=\frac{4mr}{t^2} \pi$

$T=\frac{4*0.015*0.5}{(0.70)^2} (3.142)$

$T=0.60N$

Therefore

$T=0.60 N$ , toward the center of the circle

Option C

3 0

3 years ago

Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted between S a

zhenek [66]

The correct answer is:

sixteen times

In fact, the distance between charge q and the source S is 1 unit. Instead, the distance between charge p and the source S is 4 units. The magnitude of the electrostatic force is inversely proportional to the square of the distance between the charge and the source:

$E \sim \frac{1}{r^2}$

where r is the distance. If we take the force between q and S as reference, we have r=1, so that

$E_{qS}=\frac{1}{1^2}=1$

while the force between p and S is

$E_{pS}=\frac{1}{4^2}=\frac{1}{16}$

Therefore, we see that the force exerted between q and S is 16 times the force exerted between p and S.

4 0

3 years ago

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