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4 years ago

Right answer gets brainlist

Physics

1 answer:

Alchen [17]4 years ago

3 0

Answer:

Explanation:

it is the force from the imact the propels the person through the windshield

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For small amplitudes of oscillation the motion of a pendulum is simple harmonic. Consider a pendulum with a period of 0.550 s Fi

Ivenika [448]

To solve this problem we will use the concepts related to the expression of energy for harmonic oscillator. From our given values we have that the period is equivalent to

$T = 0.55s$

Therefore the frequency will be the inverse of the period and would be given as

$f= \frac{1}{T}$

$f = \frac{1}{0.55}$

$f = 1.82s^{-1}$

The ground state energy of the pendulum is,

$E = \frac{1}{2} hv$

$E = \frac{1}{2}(6.626*10^{-34}J\cdot s)(1.82s^{-1})$

$E = 6.03*10^{-34}J$

The ground state energy in eV,

$E = 6.03 * 10^{-34}J(\frac{1eV}{1.6*10^{-19}J})$

$E = 3.8*10^{-15}eV$

The energy difference between adjacent energy levels,

$\Delta E = hv$

$\Delta E = (6.626*10^{-34}J\cdot s)(1.82s)$

$\Delta E = 12.1*10^{-34}J$

4 0

3 years ago

An airplane maintains a speed of 627 km/h relative to the air it is flying through as it makes a trip to a city 787 km away to t

amid [387]

Answer:1.33 hr

Explanation:

Given

Speed of airplane relative to air=627 km/h

Distance traveled =787 km

Speed of wind=38.4 km/h

Wind is blowing in opposite direction therefore net speed is

$v_{net}=627-38.4=588.6 km/h$

thus time taken is

$t=\frac{distance}{speed}$

$t=\frac{787}{588.6}=1.33 hr$

4 0

4 years ago

Please help me fast

MakcuM [25]

Answer:

b I think. sorry if it's wrong

6 0

3 years ago

A proton is given an acceleration of 1.5x109 m/s² when it is placed in an electric field.

olga nikolaevna [1]

Answer:

The strength of the electric field is $E=15.66\: N/C$

Explanation:

Here the electric force is equal to Newton's second law.

$F_{e}=ma$

Let's recall that electric force is the electric field times the charge, so we have:

$qE=ma$

$E=\frac{ma}{q}$ (1)

Where:

m is the proton mass

q is the proton charge

a is the acceleration

Using the equation (1) we have:

$E=\frac{1.67*10^{-27}1.5x10^{9}}{1.6*10^{-19}}$

Therefore, the strength of the electric field is $E=15.66\: N/C$

I hope it helps you!

7 0

3 years ago

10. What two shapes make up a sphere?<br> A. B.

Mashutka [201]

Answer: B

Explanation: A sphere is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk"). Like a circle in a two-dimensional space, a sphere is defined mathematically ... This distance r is the radius of the ball, which is made up from all points.

8 0

4 years ago