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mamaluj [8]
3 years ago
9

A pencil aapears bent when dippes partially in a beaker contaning water why?​

Physics
1 answer:
Snezhnost [94]3 years ago
8 0

i

the pencil appears to be bent when dipped in water because the reflected light ray from the immersed part of the pencil refracts when travels from water to air. however, it appears to be bent because our eyes expect light to travel in straight line

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7) The acceleration of gravity on the Moon is only one-sixth of that on Earth. If you hit a baseball on the Moon with the same e
rusak2 [61]

Answer:

The acceleration of gravity on the Moon is only one-sixth of that on Earth. If we hit a baseball on the moon with the same effort(and at the speed and angle)that we would on earth, the ball would land 6 times as far. The ball on the moon will cover 6 times more distance than Earth.

Explanation:

Speed=distance travelled/Time required speed

Speed=d/t

Acceleration of gravity on earth=9.8 m/s^2

Acceleration of gravity on Moon=1.62 m/s^2

So the maximum height of ball will be the ration of these both gravity.

4 0
3 years ago
An atom of an element is electrically neutral because the
lora16 [44]

Answer:

Number of protons equals the number of neutrons

6 0
3 years ago
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A 57 kg skier starts from rest at a height of H = 27 m above the end of the ski-jump ramp. As the skier leaves the ramp, his vel
Hatshy [7]

Answer:

(a)h=5.95m

(b) h is the same

Explanation:

According to the law of conservation of energy:

E_i=E_f\\U_i+K_i=U_f+K_f

The skier starts from rest, so K_i=0 and we choose the zero point of potential energy in the end of the ramp, so U_f=0. We calculate the final speed, that is, the speed when the skier leaves the ramp:

mgH=\frac{mv^2}{2}\\v=\sqrt{2gH}\\v=\sqrt{2(9.8\frac{m}{s^2})(27m)}\\v=23\frac{m}{s}

Finally, we calculate the maximum height h above the end of the ramp:

v_f^2=v_i^2-2gh\\

The initial vertical speed is given by:

v_i=vsin\theta

and the final speed is zero, solving for h:

h=\frac{v_i^2}{2g}\\h=\frac{((23\frac{m}{s})sin(28^\circ))^2}{2(9.8\frac{m}{s^2})}\\h=5.95m

(b) We can observe that the height reached does not depend on the mass of the skier

3 0
4 years ago
Based on its location on the periodic table which element would be most likely to form a negative ion
blagie [28]

Answer:

Since Fluorine is very electronegative, it can easily absorb the electrons of other elements. Since it sucks up electron, this gives Fluorine an excess electron thus making it a negative ion F-.

Explanation:

because it is

6 0
3 years ago
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Do black holes have an internal structure? If so, how might the internal structure be probed?
oksian1 [2.3K]

Answer:

no

Explanation:

it can't be probed it would be like probing a goat's butt

5 0
3 years ago
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