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Olenka [21]
3 years ago
8

Which of the following has the largest m/mentum?

Physics
1 answer:
ASHA 777 [7]3 years ago
6 0
A: The total building of Campbell high school, including the trailers and the construction area
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If an electric wire is allowed to produce a magnetic field no larger than that of the Earth (0.503 X 104 T) at a distance of 15
dem82 [27]

Answer:

37.725 A

Explanation:

B = magnitude of the magnetic field produced by the electric wire = 0.503 x 10⁻⁴ T

r = distance from the wire where the magnetic field is noted = 15 cm = 0.15 m

i = magnitude of current flowing through the wire = ?

Magnetic field by a long wire is given as

B = \frac{\mu _{o}}{4\pi }\frac{2i}{r}

Inserting the values

0.503\times 10^{-4} = (10^{-7})\frac{2i}{0.15}

i = 37.725 A

6 0
3 years ago
As a clump of interstellar gas contracts to become a main-sequence star, its changing position on the H-R diagram tells us _____
Stels [109]

Answer:

how its outward appearance is changing

Explanation:

H-R diagram is a fundamental tool used to classify stars. The position of stars on the H-R diagram is dependent on its luminosity and temperature.  

The position of the star is represented by its outward appearance specially the color. The hottest and brightest the star, the more it lies between the red and blue color range.  

The cooler stars lie on the right side of the H-R diagram while the hot stars lie on the left side of the H-R diagram.  

6 0
3 years ago
Derive an expression for the de Broglie wavelength of a thermal neutron and calculate its value at the temperature T = 290 K. Th
Vladimir [108]

Answer:

1.479 A

Explanation:

Expression for de Broglie wave length

λ = \frac{h}{\left ( 2mKE \right )^{.5}}

Where m is mass of neutron ,h is plank constant and KE is kinetic energy of

proton.

Kinetic Energy ( KE) = 3 / 2 kT

=1.5 X 1.38 X 10⁻²³ X 290 = 600.3 X 10⁻²³ J

\sqrt{2mKE} = \sqrt{2\times1.67\times10^{-27}\times600.3\times10^{-23}}

44.777 x 10⁻²⁵

λ = \frac{6.626\times10^{-34}}{44.777\times10^{-25}}

=1.479 A.

7 0
3 years ago
If friction is<br> increased, then the amount of potential energy that<br> becomes kinetic energy
Alborosie
That is incorrect friction is able to stop some thing or slow it down so it is the opposite way around. Please put bainliest! 
Cheers
AlexFray555
7 0
3 years ago
Read 2 more answers
An initially uncharged 3.67 μF capacitor and a 8.01 k Ω resistor are connected in series to a 1.50 V battery that has negligible
inn [45]

Answer:

The initial current in the circuit is 0.1873 mA

Explanation:

Given;

capacitance is given as 3.67 x 10⁻⁶ F

resistance is given as 8010 Ω

voltage across the circuit is 1.5 V

Since the capacitor is initially uncharged, the capacitive reactance is zero.

From ohms law;

Voltage across the circuit is directly proportional to the opposition to the flow of current.

V = IR

I = V/R

I = 1.5/8010

I = 0.0001873 A = 0.1873 mA

Therefore, the initial current in the circuit is 0.1873 mA

8 0
4 years ago
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