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Alina [70]
4 years ago
13

If a box is labeled 50 lbs, what is it's mass?

Physics
1 answer:
aleksandrvk [35]4 years ago
4 0
I would assume it is 50 pounds. that sounds weird?
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Find the current flowing out of the battery.​
klemol [59]

Answer:

0.36 A.

Explanation:

We'll begin by calculating the equivalent resistance between 35 Ω and 20 Ω resistor. This is illustrated below:

Resistor 1 (R₁) = 35 Ω

Resistor 2 (R₂) = 20 Ω

Equivalent Resistance (Rₑq) =?

Since, the two resistors are in parallel connections, their equivalence can be obtained as follow:

Rₑq = (R₁ × R₂) / (R₁ + R₂)

Rₑq = (35 × 20) / (35 + 20)

Rₑq = 700 / 55

Rₑq = 12.73 Ω

Next, we shall determine the total resistance in the circuit. This can be obtained as follow:

Equivalent resistance between 35 Ω and 20 Ω (Rₑq) = 12.73 Ω

Resistor 3 (R₃) = 15 Ω

Total resistance (R) in the circuit =?

R = Rₑq + R₃ (they are in series connection)

R = 12.73 + 15

R = 27.73 Ω

Finally, we shall determine the current. This can be obtained as follow:

Total resistance (R) = 27.73 Ω

Voltage (V) = 10 V

Current (I) =?

V = IR

10 = I × 27.73

Divide both side by 27.73

I = 10 / 27.73

I = 0.36 A

Therefore, the current is 0.36 A.

6 0
3 years ago
A Carnot engine whose high-temperature reservoir is at 620 k takes in 550 J of heat at this temperature in each cycle and gives
yarga [219]

Answer:

(a) W=217 J

(b) Tc=378K

(c) e=0.39=39%

Explanation:

For part (a)

We to calculate the mechanical work W the engine  does. By knowing QC and QH can obtain the work using equation  

W = IQHI — IQcl  .....................eq(1)

Put given values for QH and QC into equation (1) to get  

the mechanical work of the engine  

W = 550 - 335  

W=217 J

For part (b)

We want to determine the temperature of low temperature  reservoir which means Tc  

IQc|/|Qh| =TC/TH  

for Tc  

Tc=(IQc|/|Qh|)*TH

Now we can put values

Tc= 620K  (335/ 550.1)  

Tc=378K  

For part (c)

Here we want to find the thermal efficiency (e) of the cycle

e=1-TC/TH

e=1-(378/620)

e=0.39=39%

6 0
3 years ago
is it possible for the gravitational force between two 50-kg objects to be less than the gravitational force between a 59-kg obj
Eva8 [605]

OF COURSE !  

The gravitational force between two objects doesn't ONLY depend on the product of their masses.  It also depends on the distance between them.

I'm not even going to work out the numbers for my example.  I'm just going to state without proof that at the top of the 2nd frame, the gravitational force between you and your bowling ball is greater than the gravitational force between you and the whole darn Andromeda galaxy !  My reasoning is based on the fact that your bowling ball is maybe 1 foot from your center of mass, whereas the Andromeda galaxy is more like 2.5 million light years from it.  That right there is going to give your bowling ball a big advantage when it comes to gravity !

5 0
3 years ago
An inclined is a simple machine that will increase the distance something moves, but it will reduce the amount of energy needed.
emmainna [20.7K]

Answer:

potential energy which later on gets converted to kinetic energy of an object

4 0
4 years ago
To understand the nature of electric current and the conditions under which it exists.Electric current is defined as the motion
Katarina [22]

Answer:

The metallic conductors

Explanation:

The metallic conductors has more free electrons that are movable, thus they conduct electricity better.

6 0
4 years ago
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