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4 years ago

All scientists try to base their conclusions on

Physics

2 answers:

Crank4 years ago

5 0

They base their conclusions off Data that they recorded when conducting experiments.

Dima020 [189]4 years ago

3 0

Mathematics and science

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A solution that contains a small amount of salt and a large amount of water is said to be a _______ solution.

NikAS [45]

Said to be a Dilute solution.

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3 years ago

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If you want to create an electric current, which device should you use? a generator a transformer a motor a magnet

Mariulka [41]

i believe the correct answer would be a transformer

please forgive me if im wrong

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3 years ago

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A 0.22-caliber handgun fires a 28-g bullet at a velocity of 765 m/s. Calculate the de Broglie wavelength of the bullet.

ser-zykov [4K]

Answer:

de Broglie wavelength of the bullet is 3.093 x 10⁻³⁵ m

Explanation:

Given;

mass of bullet, m = 28 g = 0.028 kg

velocity of the bullet, v = 765 m/s

de Broglie wavelength of the bullet is given by;

λ = h / mv

where;

λ is de Broglie wavelength of the bullet

h is Planck's constant = 6.626 x 10⁻³⁴ J/s

λ = h / mv

λ = (6.626 x 10⁻³⁴ ) / (0.028 x 765)

λ = 3.093 x 10⁻³⁵ m

Therefore, de Broglie wavelength of the bullet is 3.093 x 10⁻³⁵ m

8 0

3 years ago

The friends are ready to try a problem. A battery has an emf of 12.0 V and an internal resistance of 0.05 Ω. Its terminals are c

Zanzabum

Answer:

Terminal voltage = 11.5 V

Power across load = 119.7 W

Power across internal resistance = 5.4 W

Power delivered by battery = 125.2 W

Explanation:

The current in the circuit is given by

$I=\dfrac{E}{R+r}$

where E is the emf of the battery, R us the load resistance and r is the internal resistance.

$I=\dfrac{12}{1.1+0.05} = 10.43 \text{ A}$

The terminal voltage is the potential difference across the load resistor.

V = I × R = 10.43 A × 1.1 Ω = 11.5 V

The power across any resistance is given by $I^2R$

For the load resistor,

$P_L=10.43^2\times1.1 = 119.7 \text{ W}$

For the internal resistance,

$P_r=10.43^2\times0.05= 5.4\text{ W}$

The power delivered by the battery is

$P = P_L + P_r = 119.7 + 5.4 = 124.1 \text{ W}$

This could also be found by

$P = IE = 10.34\times12 = 125.2 \text{ W}$

The discrepancy in both answers is due to the approximations. The second answer is better.

4 0

4 years ago

Can anybody please help? 15 points pls

Mariana [72]

Acceleration= v/ r
So you have to divide 700 by 0.800 which is equal to 875 m/s 2

5 0

3 years ago