In an exothermic reaction, the energy stored in the reactant is____

Calculate the centripetal force exerted on the earth by the sun. Assume that the period of revolution for the earth is 365.25 da

Doss [256]

Answer:

F = 3.55 x 10²² N

Explanation:

average distance of sun from earth = 1.5 × 10⁸ km

mass of earth = 6 x 10²⁴ kg

time = 365.25 days

distance = 2 π r

distance = 2 π x 1.5 x 10¹¹ m

= 3 π x 10¹¹ m

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

$v = \dfrac{3 \pi \times 10^{11}}{365.25 \times 24 \times 60 \times 60}$

v = 2.98 x 10⁴ m/s

we know centripetal force

$F = \dfrac{mv^2}{r}$

$F = \dfrac{6 \times 10^{24}\times (2.98\times 10^4)^2}{1.5\times 10^{11}}$

F = 3.55 x 10²² N

8 0

3 years ago

Suppose that video game discs are a normal good. If the income of video game players increases, you predict that in the market

DENIUS [597]

Answer:

Both equilibrium price and quantity will increase.

Explanation:

An increase in the income of video game players will surely lead to an upward shift in the supply and demand curve. This shift in the supply and demand curve would affect the equilibrium price and quantity positively leading to a correspondent increase in the equilibrium price and quantity.

8 0

3 years ago

A student is playing with a radio-controlled race car on the balcony of a sixth-floor apartment. An accidental

pentagon [3]

Answer:

No, it is independent

Explanation:

As we know that car is moving horizontally

so the vertical component of the speed is zero initially

so in order to hit the ground we know that

$\Delta y = v_y t + \frac{1}{2}at^2$

so here we know that

$h = 0 + \frac{1}{2}gt^2$

on solving above equation for time

$t = \sqrt{\frac{2h}{g}}$

so we will say that it will not depends on the initial horizontal speed

8 0

4 years ago

Describe the types of waves that are made by the music of an orchestra. For example, would the violins’ waves be fast or slow? W

EleoNora [17]

Explanation:

Interference and Beats

The Doppler Effect and Shock Waves

Boundary Behavior

Reflection, Refraction, and Diffraction

Wave interference is the phenomenon that occurs when two waves meet while traveling along with the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium. As mentioned in a previous unit of The Physics Classroom Tutorial, if two upward displaced pulses having the same shape meet up with one another while traveling in opposite directions along with with a medium, the medium will take on the shape of an upward displaced pulse with twice the amplitude of the two interfering pulses. This type of interference is known as constructive interference. If an upward displaced pulse and a downward displaced pulse having the same shape meet up with one another while traveling in opposite directions along with a medium, the two pulses will cancel each other's effect upon the displacement of the medium and the medium will assume the equilibrium position. This type of interference is known as destructive interference. The diagrams below show two waves - one is blue and the other is red - interfering in such a way to produce a resultant shape in a medium; the result is shown in green. In two cases (on the left and in the middle), constructive interference occurs and in the third case (on the far right, destructive interference occurs.

Now if two sound waves interfere at a given location in such a way that the compression of one wave meets up with the rarefaction of a second wave, destructive interference results. The net effect of compression (which pushes particles together) and a rarefaction (which pulls particles apart) upon the particles in a given region of the medium are to not even cause a displacement of the particles. The tendency of the compression to push particles together is canceled by the tendency of the rarefactions to pull particles apart; the particles would remain at their rest position as though there wasn't even a disturbance passing through them. This is a form of destructive interference. Now if a particular location along with the medium repeatedly experiences the interference of compression and rarefaction followed up by the interference of rarefaction and impression, then the two sound waves will continually cancel each other and no sound is heard. The absence of sound is the result of the particles remaining at rest and behaving as though there was no disturbance passing through it. Amazingly, in a situation such as this, two sound waves would combine to produce no sound. As mentioned in a previous unit, locations along with the medium where destructive interference continually occurs are known as nodes.

6 0

3 years ago

Plants have organelles called

Natasha_Volkova [10]

Answer:

chloroplasts

Explanation:

Plants have chloroplasts which are plastids that contains chlorophyll and photosynthesis takes place.

3 0

4 years ago

In an exothermic reaction, the energy stored in the reactant is_____ the energy stored in the products.