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Fofino [41]
3 years ago
10

The battery on your car has a rating stated in ampere-hours that permits you to estimatethelengthoftimeafullychargedbatterycould

deliveranyparticularcurrent before discharge. Approximately how much energy is stored by a 50 A-hour 12-V battery?
Physics
2 answers:
KengaRu [80]3 years ago
5 0

Answer:

E = 600 J

Explanation:

The power is

        P = W / t = E / t

         E = P t

The electrical power is

        P = V I

We substitute

          E = V I t

Let's calculate

           E = 12 50 1

           E = 600 J

This is the energy stored in the battery

Tema [17]3 years ago
5 0

Answer:

600 J

Explanation:

Energy: This can be defined as the ability or the capacity to perform work. The S.I unit of energy is Joules.

From the question,

The formula of Electrical Energy is given as,

E = VIt........................... Equation 1

Where E = Electrical Energy, V = Voltage, I = current, t = time

or,

E = VI'....................... Equation 2

Where I' = rating of the battery in Ampere-hours

Given: V = 12 V, I' = 50 A-hour

E = 12(50)

E = 600 J

Hence the energy stored in the battery = 600 J

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Vikki [24]

Answer:

-4.0 N

Explanation:

Since the force of friction is the only force acting on the box, according to Newton's second law its magnitude must be equal to the product between mass (m) and acceleration (a):

F_f = ma (1)

We can find the mass of the box from its weight: in fact, since the weight is W = 50.0 N, its mass will be

m=\frac{W}{g}=\frac{50.0 N}{9.8 m/s^2}=5.1 kg

And we can fidn the acceleration by using the formula:

a=\frac{v-u}{t}

where

v = 0 is the final velocity

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Substituting, we find

a=\frac{0-1.75 m/s}{2.25 s}=-0.78 m/s^2

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Therefore, substituting into eq.(1) we find the force of friction:

F_f = (5.1 kg)(-0.78 m/s^2)=-4.0 N

Where the negative sign means the direction of the force is opposite to the motion of the box.

6 0
3 years ago
A waitperson carrying a tray with a platter on it tips the tray at an angle of 12 degrees below the horizontal. If the gravitati
Tasya [4]

Answer:1.04 N

Explanation:

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This gravitational Force has components along and Perpendicular to Platter

Perpendicular Force W_p=W\cos \theta

W_p=5\times \cos 12=4.89 N

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