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tresset_1 [31]
3 years ago
10

John Adams then activates the nitro boost, increasing the acceleration to 22 m/s2, and jams the steering column with a bar to ke

ep the vehicle moving a straight line. If the vehicle is 170 meters behind the cargo plane that is heading down the runway at 20 m/s, how long in seconds does it take for the vehicle to pass the plane and for the second US president to jump onboard
Physics
1 answer:
tia_tia [17]3 years ago
3 0

Answer:

Explanation:

velocity of vehicle u = 20 m/s

acceleration a = 22 m /s²

distance s = 170 m

time t = ?

s = ut + 1/2 a t²

170 = 20 t + 1/2 x 22 t²

170 = 20t + 11 t²

11 t² + 20 t - 170 = 0

t = 3 s

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A proton and an electron are released from rest, with only the electrostatic force acting. Which of the following statements mus
Anit [1.1K]

Answer:

Their kinetic energy will increase but potential energy will decrease.

Explanation:

Given that

Initial velocities of electron and proton is zero.

We know that ,electron have negative charge and proton have positive charge it means that they will attract to each other.We know that opposite charge attract to each other and same charge repels to each other.

It means that the velocities of proton and electron will increase and that leads to increase in the kinetic energy of proton and electron.

We know that potential energy U

U\alpha -\dfrac{1}{r}

So when r will decrease then U will increase but in negative direction it means that U will decrease.

So we can say that their kinetic energy will increase but potential energy will decrease.

5 0
3 years ago
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 65.5-gram mass is attached at the 21.0-cm
Gnesinka [82]

Answer:

113.53 g

Explanation:

Please see attached photo for explanation.

In the attached photo, M is the mass of the meter stick.

The value of M can be obtained as shown below:

Clockwise moment = M × 10.5

Anticlockwise moment = 65.5 × 18.2

Anticlockwise moment = Clockwise moment

65.5 × 18.2 = M × 10.5

1192.1 = M × 10.5

Divide both side by 10.5

M = 1192.1 / 10.5

M = 113.53 g

Thus, the mass of the meter stick is 113.53 g

7 0
3 years ago
Carbon Dioxide is used in photosynthesis is an example of which spheres interacting?
Harlamova29_29 [7]

With a partner, describe interactions in this scene, tracing the movement of materials or energy through all four of Earth's spheres if possible. Plants (biosphere) draw water (hydrosphere) and nutrients from the soil (geosphere) and release water vapor into the atmosphere.

6 0
4 years ago
A wave with 2.0 m amplitude has a frequency of 500 Hz is travelling at a speed of 200 m/s. What is the wavelength?
Serggg [28]

Answer: 0.4m

Explanation:

Given that:

Amplitude of wave = 2.0 m

Wavelength (λ)= ?

Frequency F = 500Hz

Speed V = 200 m/s

The wavelength is measured in metres, and represented by the symbol λ.

So, apply the formula:

Wavespeed V= Frequency F xwavelength λ

200m/s = 500Hz x λ

λ = 200m/s / 500Hz

λ = 0.4m

Thus, the wavelength is 0.4 metres

3 0
3 years ago
What is brownion motion
Alex777 [14]

Answer: Brownion motion is the erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium.

Explanation:

Brownian motion is the random movement of particles in a fluid due to their collisions with other atoms or molecules.

4 0
4 years ago
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