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11111nata11111 [884]
3 years ago
8

A car driving at 35 m/s hits the brakes and comes to a stop after 7 seconds. What is the acceleration of the car?

Physics
1 answer:
Liono4ka [1.6K]3 years ago
4 0

Answer:

Vi=35m/s

Vf=0

t=7seconds

a=?

a=Vf-Vi/t

a=0-35/7

a= -35/7

a= -5m/s^2

Here -ve shows declaration.

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How much thermal energy is needed to melt 1.25 kg of water at its melting point? Use Q = masslaten heat of fusion.
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Answer:

Latent heatnof fusion = 417.5 J

Explanation:

Specific latent heat of fusion of water is 334kJ.kg-1.

The heat required to melt water when it's ice I called latent heat because there is no temperature change, the only change observed is change in physical structure.

The amount of heat required to change 1 kg of solid to its liquid state (at its melting point) at atmospheric pressure is called Latent heat of Fusion.

Latent heat = ML

Latent heat= 1.25 kg * 334kJ.kg-1

Latent heat = 1.25*334 *(J/kg)*kg

Latent heat = 417.5 J

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You indicate that a symbol
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B. over the symbol.

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Daniel and Christopher were on a plane traveling at a velocity of 200 km/hr south for 1,000 km. How long (in hours) was the plan
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What causes changes of states in matter?
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3 years ago
Suppose a consumption function is given as c = $500 0.75yd. the marginal propensity to consume is:______
kobusy [5.1K]

In the the case above, if the consumption function is: C = $500 + 0.75 × YD, from the equation, the The marginal propensity to consume is option C) 0.75.

<h3>What is MPC?</h3>

The marginal propensity to consume which is MPC is the aspect of each extra money that is dollar of a household's income that is said to be used, consumed or spent.

Note that Consumer behavior in regards to saving or spending has a very vital impact on the economy of a country.

From the formula given, the breakdown is:

YD = disposable income.

Autonomous consumption = $500.

The marginal propensity to consume  = 0.75.

Therefore, In the the case above, if the consumption function is: C = $500 + 0.75 × YD, from the equation, the The marginal propensity to consume is option C) 0.75.

See full question below

Suppose that the consumption function is: C = $500 + 0.75 × YD

(Scenario: Consumption Spending) The marginal propensity to consume is:

A) $500.

B) 0.

C) 0.75

D) 0.2.

Learn more about marginal propensity from

brainly.com/question/17930875

#SPJ1

7 0
2 years ago
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