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nikitadnepr [17]

3 years ago

11

How many stars can be seen without a telescope on earth

1 answer:

belka [17]3 years ago

5 0

There are only about 5,000 stars visible to the naked, average, human eye, . And, because the Earth itself gets in the way, you can only see about a half of those from where you stand.

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What is the main function of a telescope?

Korvikt [17]

It magnifies light received from distant objects.

4 0

3 years ago

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Viewing moving objects from pond water under his microscope and named then animalcules

pogonyaev

I think it was either Robert Hook or Anton Van Leevwen Hoek

3 0

3 years ago

Potential energy is the energy possessed by an object due to its ___ and kinetic energy is the energy an object has a result of

Nata [24]

1)due to it's position in the gravitational field
2)due to it's motion

6 0

3 years ago

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Um corpo de massa 50g recebe 300 calorias e sua temperatura sobe de -10°C até 20°C. Determine a capacidade térmica do corpo e o

kykrilka [37]

The specific heat capacity of the substance is $0.963 J/g^{\circ}C$

Explanation:

When an object of mass m is supplied with a certain amount of energy Q, its temperature increases according to the equation:

$Q=mC_s \Delta T$

where

m is the mass of the object

$C_s$ is its specific heat capacity

$\Delta T$ is the increase in temperature of the object

In this problem, we have

$Q=300 cal \cdot 4.814 = 1444.2 J$

m = 50 g

$\Delta T = 20C-(-10C)=30^{\circ}C$

Therefore, we can solve for $C_s$ to find its specific heat capacity:

$C_s = \frac{Q}{m\Delta T}=\frac{1444.2}{(50)(30)}=0.963 J/gC$

Learn more about specific heat capacity:

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#LearnwithBrainly

7 0

3 years ago

The instantaneous emf resulting from magnetic induction equals the rate of change of flux is

katen-ka-za [31]

Lenz's Law: The polarity of the induced emf is such that it produces a current whose magnetic field opposes the change in magnetic flux through the loop.

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3 years ago