2 years ago

Which of the following statements about features on the sun is true

Physics

1 answer:

pashok25 [27]2 years ago

7 0

D is the answer because of the solar phonominals

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A 2kg Book is sitting on a table.a 10n Force is pulling to the right.a 3n Force is pulling to the left what is the net force act

salantis [7]

The net force = sum of all forces acting on the body

If we take left side as -ve and right side as +ve,
then,

The net force here would be equal to,
10N + (- 3N)
= 7N.

Therefore, a net force of +7N ( + indicates it's moving towards right) is acting on the book of mass 2kg.

4 0

3 years ago

which of the following are vector quantities? check all that apply. a. force b. acceleration c. displacement d. mass

Ratling [72]

Force, acceleration, and Displacement are all vector quantities.

4 0

3 years ago

A combined circuit has two resistors in series (27.5 ohms and 33.0 ohms) and another in parallel (22.0 ohms). If the power sourc

Dafna1 [17]

R 1,2 = 27.5 + 33.0 = 60.5 Ohms
1/ R 1,2,3 = 1/ 60.5 + 1 / 22 = 82.5 / 1331
R 1, 2, 3 = 1331 / 82.5 = 16.13 Ohms
I = U / R
I = 9 V / 16.13 Ohms = 0.557 A ≈ 0.56 A
Answer: C ) 0.56 Amps

4 0

3 years ago

We think of the response of the circuit as the ratio of the maximum current to the maximum voltage provided. Explain why the rat

nexus9112 [7]

Answer:

Z = R, i = V/Z, w = √1 / LC

Explanation:

In an RLC circuit the impedance of the circuit is

Z = √[R² + ( $X_{L} - X_{C}$ )²

Where

$X_{L}$ = wL

X_{L} = 1 / wC

They are the reactances of the inductor and the capacitor, in this case the current advances to the voltage in the first and is delayed from the voltage in the second, so when the two values give the same reactance the current goes in phase with the voltage and the impedance is minimal

Z = R

V= i Z

i = V/Z

Therefore the current is maximum, this occurs when

w = √1 / LC

Saying that this is the resonant frequency

5 0

3 years ago

You perform nine (identical) measurements of the acceleration of gravity (units of m/s2): 10.1, 9.87, 9.76, 9.91, 9.75, 9.88, 9.

san4es73 [151]

Answer: The mean value <u>= 9.85m/s².</u>

Explanation:

Mean = $\dfrac{\text{Sum of n observations}}{n}$

The given measurements the acceleration of gravity (units of m/s²): 10.1, 9.87, 9.76, 9.91, 9.75, 9.88, 9.69, 9.83, and 9.90.

Number of measurements =9

Sum of measurements = 88.69

Mean = $\dfrac{88.69}{9}=9.85444444\approx9.85$

Hence, the mean value<u> = 9.85m/s².</u>

6 0

3 years ago