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VARVARA [1.3K]
3 years ago
13

.In a bizarre but harmless accident, Superman fell from the top of the Eiffel Tower. How fast was Superman traveling when he hit

the ground 7.80 seconds after falling?
Physics
1 answer:
ELEN [110]3 years ago
4 0

Answer:

 (7.8) x (9.8 m/s)  =  76.44 m/s

during the time he spent falling.

Since his falling speed was zero when he 'stepped' off of the top,

he hit the ground at  76.44 m/s.

That's about 170 miles per hour.

I'll bet he left one serious crater!

I hope this helps too! :D

Explanation:

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Whenever the alternating current frequency in a series RLC circuit is halved,
Colt1911 [192]

Answer:

The correct option is

a. The inductive reactance is doubled and the capacitive reactance is halved

Explanation:

For a series RLC circuit, is a resonant circuit such that the impedance, Z, is minimum at the resonance frequency

Also we have that the capacitive reactance X_C, is given as follows;

X_c = \dfrac{1}{\omega \cdot C}

Where;

ω = Angular frequency = 2πf

Where;

f = The frequency in the circuit

\therefore X_c = \dfrac{1}{2 \cdot \pi \cdot f \cdot C}

The inductive reactance is also given as follows;

X_L = \omega \cdot L =  2 \cdot \pi \cdot f \cdot L

Therefore, when the circuit frequency doubles, the inductive reactance doubles and the capacitive reactance halves

8 0
4 years ago
An ice cube is placed on a hot stove. Which of these statements best describes how heat moves between the ice cube and the stove
Tanzania [10]
B! Conduction is touch, so the heat traveled through touch from th stove to the ice cube, therefore melting it
6 0
4 years ago
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You observe a liquid turning to gas at 135 degrees Celsius. You are observing the
Leokris [45]
You are observing the boiling point
7 0
3 years ago
When performing an.experiment similar to Millikan's oil drop, a student measured the following load magnitudes: 3.26x10 ^-19 C 5
Scilla [17]

Answer:

1.6 x 10⁻¹⁹ C

Explanation:

Let us arrange the charges in the ascending order and round them off as follows :-

1.53 x 10⁻¹⁹ C   → 1.6x 10⁻¹⁹ C

3.26 x 10⁻¹⁹C   → 3.2 x 10⁻¹⁹ C

4.66 x 10⁻¹⁹C   → 4.8 x 10⁻¹⁹ C

5.09 x 10⁻¹⁹C   → 4.8 x 10⁻¹⁹ C

6.39 x 10⁻¹⁹C   → 6.4 x 10⁻¹⁹ C

The rounding off has been made to facilitate easy calculation to come to a conclusion and to accommodate error in measurement.

Here we observe that

2 nd charge is almost twice the first charge

3 rd and 4 th charges are almost 3 times the first charge

5 th charge is almost 4 times the first charge.

This result implies that 2 nd to 5 th charges are made by combination of the first charge ie if we take e as first  charge , 2nd to 5 th charges can be  written as 2e,  3e ,3e and 4e. Hence e is the minimum charge existing in nature and on electron this minimum charge of  1.6 x 10⁻¹⁹ C  exists.

3 0
3 years ago
You and your dog are walking along a pond. Your dog looks into the still water and is startled to see its reflection. Which phen
attashe74 [19]

You just identified the image as a "reflection", so it's a pretty good bet that
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Your dog can see his reflection in a mirror inside the house just as easily
as in the surface of the pond.  My dogs do it all the time.  The phenomenon
doesn't require water.

It's reflection of light waves.

3 0
3 years ago
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