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TEA [102]
3 years ago
15

The velocity of a bob on a simple pendulum at the lowest position is 10.56 m/s. What is the maximum vertical height it is able t

o rise to?
Physics
1 answer:
kondaur [170]3 years ago
7 0

um I do not know sorry

Explanation:

ummmmmmjjhfgfffff

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What are two uses of total internal reflection? (GCSE Physics)
jeka94

Answer:

1) Used in optical instruments such as telescopes.

2) Used to form mirages

Explanation:

1) Perhaps the simplest example of this is the astronomical refractor telescope with a right-angle eyepiece holder. Astro scopes mostly point at things high in the sky, but it is inconvenient to place your eye low to look up through the scope, so the light path is bent 90 degrees just before the eyepiece. This can be done with a mirror, but using a simple 45 degree prism (internal angles 45, 45, and 90 degrees) will do the 90 degree bend more efficiently.

2) So when a light pass from cold air to hot air light tends to bend from its path which is known as refraction. As the light get refracted it reaches to a point where the light tends to form 90 degree angle.

3 0
3 years ago
Find the mass of a sample that has a dersity of 2 g/mL and a volume of 10 mL
In-s [12.5K]

Answer:

mass = volume x density.

Explanation:

2 x 10 = 20g

4 0
3 years ago
A 600 N astronaut travels to an asteroid where the gravitational force is one-hundredth that of Earth. What is the astronaut's w
Ganezh [65]

Answer:

A) 6N

Explanation:

the weight of the astronaut on earth can be calculated with the formula

Weight = mass * gravity of earth

Since the gravitational force is one-hundredth of Earth, the formula should be

Weight = mass * (gravity of earth / 100)

Weight = (mass * gravity of earth) / 100

Since you already know the weight, you only need to divide by 100

Weight = (mass * gravity of earth) / 100

Weight = 600N / 100

Weight = 6N

4 0
3 years ago
Which of the following is the best definition of a closed system?
lisov135 [29]

The answer is either

b A system in which Newton's Laws are valid

or

c A system in which there are no external forces.

Explanation:

not a, and not d

There are energy changes in a closed system.

A closed system obeys the conservation laws in its physical description.

4 0
3 years ago
Which terrestrial ecosystem or life zone produces the highest net primary productivity per year? a. temperate forest b. Savanna
horsena [70]

a. hope this helps...

8 0
3 years ago
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