3 years ago

¿Cuáles son los fenómenos que no se pueden explicar con la teoría corpuscular de la luz?

Physics

1 answer:

maxonik [38]3 years ago

5 0

The answer is diffraction or interference

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What is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a petri dish at a constant spee

Dahasolnce [82]

speed of the bacterium is 3.5 mm/s

$v = 3.5 mm/s$

total distance traveled by bacterium = 8.4 cm

$d = 8.4 cm = 84 mm$

time take to cover the distance

$t = \frac{d}{v}$

$t = \frac{84}{3.5} = 24 s$

<em>so it will take 24 s to move this distance</em>

7 0

4 years ago

A 65 N boy sits on a sled weighing 52 N on a horizontal surface. The coefficient of friction between the sled and the snow is 0.

pogonyaev

Answer:

1.40 N

Explanation:

The magnitude of the frictional force is given by:

$F=\mu N$

where

$\mu$ is the coefficient of friction

N is the magnitude of the normal reaction

The coefficient of friction for this problem is $\mu=0.012$ . The magnitude of the normal reaction is equal to the combined weight of the boy and the sled, because the surface is horizontal, so

$N=65 N+52 N=117 N$

Therefore, the frictional force is

$F=\mu N=(0.012)(117 N)=1.40 N$

3 0

3 years ago

Where is the antinode of a standing wave?

anastassius [24]

What's the answer choices?

4 0

4 years ago

A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. How much power was

Sergio039 [100]

Answer:

25 watts

Explanation:

Power=work/time

work=force x distance

1000 × 3

=3000 Joules

power= 3000/120

=25 watts

4 0

4 years ago

If the height is 10m, what is the potential energy? Asuming that the mass is 10

Ratling [72]

$\huge{\textit{\sf{{\color{m}{Answer}}{\color{b}{࿐}}}}}$

we know,

$\boxed{potential \: energy = mgh}$

So,

$\longmapsto10 \times 9.8 \times 10$

$\longmapsto980 \: joules$

6 0

3 years ago