Answer:
-1
Explanation:
Electrons have a negative charge and protons have a positive charge. (+11) + (-12) = -1
B.Ask her friends how they stay so thin, and use the same strategies.
C. Find new friends who are not as thin so she doesn't feel any pressure.
D.Try out the newest diet she's seen advertised on TV to help her lose the weight she wants to lose.
Answer: Option (A) is the correct answer.
Explanation:
If Lara wants to be healthy, and really wants to fit in with her friends then she should talk to a trusted adult to help her evaluate her eating and exercise in a healthy way.
This is because a trusted person will give her beneficial advice as compared to any other person or any advertisement on TV which may promise false results in order to sell their product.
This may also lead to harmful effects on her health. Thus, she should eat and exercise in a healthy way.
A. Talk to a trusted adult to help her evaluate her eating and exercise in a healthy way.
F=
M=
A=
Both students do the same amount of work, but Ben delivers more power due to completing the work in a shorter time.
In this case, both Ben and Bonnie are lifting the same 50 kg barbell over their heads, but they are doing it at different rates. Bonnie lifts the barbell 10 times in one minute, which means she is doing the work over a longer period of time. Ben, on the other hand, lifts the barbell 10 times in 10 seconds, doing the work in a shorter amount of time.
The amount of work done is equal to the force exerted multiplied by the distance moved. Since the mass and distance are the same for both students, the work done is equal. However, power is defined as the rate at which work is done, which is calculated by dividing the work done by the time taken to do it. Since Ben completes the work in a shorter period of time, he delivers more power than Bonnie.
Therefore, Ben does the most work and delivers the most power.
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Answer:
Both of them
Explanation:
Both F's are forces, so µ must be unitless/dimensionless.
F[friction] = µ F[normal]
Or, more explicitly in terms of the units:
(Newtons) = (constant) (Newtons)
resistance. The total amount of heat energy
produced by the heater in 60.0 seconds is
(1) 7.20 × 10^3 J (3) 8.64 × 10^4 J
(2) 5.76 × 10^4 J (4) 6.91 × 10^6 J
Ohm's law :
V = IR
The amount of work done is
P = IV or P = I^2R (using Ohm's law to substitute)
Therefore,
P = 64*15
= 960W
So the total energy released is
Pt = 960*60
= 57600J
"Ohm's law states the relationship between electric current and potential difference. It states that the current that flows through most conductors is directly proportional to the voltage applied to it."
The strength of a direct current is directly proportional to the potential difference and inversely proportional to the resistance of the circuit.
Work done : W = (|F| cosθ) |d|
"Work done is defined as the multiplication of magnitude of displacement d and the component of the force that is in the direction of displacement."
Know more about ohms law here
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