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rusak2 [61]
3 years ago
5

Wave speed?_____ Frequency?_____ Wavelength?_____

Physics
1 answer:
Andru [333]3 years ago
3 0

Answer:

wave speed 200 m/s

wavelength 2 m

frequency = 100 Hz

Explanation:

there are 3 waves

v = 200m/s

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777dan777 [17]

Answer:

a

Explanation:

3 0
3 years ago
Across what potential difference does an electron have to be accelerated in order to reach the speed v=3e7 m/s?
zmey [24]

When an electron is accelerated through potential difference then the speed that it attain will be explained by energy conservation

here by energy conservation we can say that

change in kinetic energy of electron = electrostatic potential energy gained through given potential difference

kinetic energy is given as

KE = \frac{1}{2}mv^2

electrostatic potential energy is given as

PE = qV

now by energy conservation

qV = \frac{1}{2}mv^2

given that for electron

m = 9.1 * 10^{-31} kg

v = 3 * 10^7 m/s

q = 1.6 * 10^{-19} C

now by plug in values

1.6 * 10^{-19} * V = \frac{1}{2}*9.1* 10^{-31} *(3*10^7)^2

V = \frac{4.095 * 10^{-16}}{1.6 * 10^{-19}}

V = 2559.4 Volts

So here it is accelerated through potential difference of 2559.4 Volts

4 0
3 years ago
So far in this tutorial, you have been launching a pumpkin. Let's see what happens to the trajectory if you launch something big
Sliva [168]

Answer:

The trajectories and thus the range of the car and the pumpkin are identical.

Explanation:

Trajectory of projectile is given by

Y=x \tan \theta-\frac{gx^2}{2u^2 \cos \theta ^2}

Also range is given by,

R=\frac{u^2 \sin 2 \theta}{g}

Trajectory and path both are independent on mass. Only depends on initial speed u and angle of projection \theta

So Range and Trajectory both will be same.

Identical trajectory and equal range.

Therefore, The trajectories and thus the range of the car and the pumpkin are identical.

3 0
3 years ago
Plz I need help with number 1 !!!
Darya [45]
Speed-up
slow-down
change direction
5 0
3 years ago
The force of ________ is the force at which the earth attracts another object towards itself.
Varvara68 [4.7K]
The answer is C gravity 
3 0
4 years ago
Read 2 more answers
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