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Bad White [126]
3 years ago
12

Should your parent Ignore you? Should your parent call you names? Why/ Why not? (5pts)

Physics
1 answer:
AysviL [449]3 years ago
4 0

no cause kids will think its Neglect and names will hert the kids and think they are not wanted

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Calculate the volume that 42g of nitrogen gas (N2)occupies at standard temperature and pressure.​
luda_lava [24]

Nitrogen gas has a molar mass of about 28.0134 g/mol. Then we have a starting amount of

(42 g) / (28.0134 g/mol) ≈ 1.4993 mol

of N₂.

At standard temperature and pressure, one mole of an ideal gas occupies a volume of about 22.4 L. Then 42 g, or 1.4993 mol, of N₂ takes up

(1.4993 mol) × (22.4 L/mol) ≈ 33.6 L

8 0
3 years ago
A 0.600 kg toy car is powered by one 9V battery (9.00 V) connected directly to a small DC motor. The car has an effective energy
valina [46]

Answer:

The average current I supplied to the cars motor is 0.225 Amperes.

Explanation:

The mass of the toy car is given as, m = 0.6 kg

The toy car operates at a steady speed of, v =  3.43 m/s.

It achieves the steady speed after a time, t = 5.69 seconds.

The total kinetic energy of the car is given by,

E = \frac{1}{2} m v^2

= 0.5 × 0.6 × (3.43)^2

= 3.53 Joules

Since the efficiency of the motor is 30.6%  = 0.306

The electrical energy equivalent is supplied to motor  = \frac{3.53}{0.306}  = 11.54 Joules.

The electrical energy is given by P × t = I × V × t  = 11.54 Joules

P is the electric power where P = I × V where V is the voltage of the cell and is the average current, I.

Therefore we can write I × 9 × 5.69 = 11.54 Joules.

So the average current I = \frac{11.54}{9 \times 5.69 } = 0.225 Amperes.

3 0
3 years ago
How many neutrons does the most common isotope of hydrogen have?
kipiarov [429]
The most common hydrogen isotope, protium, has no neutrons in the nucleus.

Isotopes of 

8 0
3 years ago
The height of the tide measured at a seaside community varies according to the number of hours t after midnight. If the height h
antoniya [11.8K]

Explanation:

Given that, the height of the tide measured at a seaside community varies according to the number of hours t after midnight. The height is given by the equation as :

h=-\dfrac{1}{2}t^2+6t-9

When the tide first be at 6 ft, put h = 6 ft in above equation as :

-\dfrac{1}{2}t^2+6t-9=6

-t^2+12t-18=0

On solving the above equation to find the value of t. It is equal to :

t = 3.551 seconds

or

t = 8.449 seconds

So, the tide of 6 ft is at  3.551 seconds and 8.449 seconds. Hence, this is the required solution.

6 0
3 years ago
Which is NOT a way to stay safe from static electricity?
lidiya [134]
A run though an open field during a thunderstorm is the answer
5 0
2 years ago
Read 2 more answers
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