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3 years ago

A drag racer starts her car from rest and

Physics

1 answer:

olga nikolaevna [1]3 years ago

6 0

Answer:

10.9 s

Explanation:

Given:

Δx = 367 m

v₀ = 0 m/s

a = 6.2 m/s²

Find: t

Δx = v₀ t + ½ at²

367 m = (0 m/s) t + ½ (6.2 m/s²) t²

t ≈ 10.9 s

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Stacy's home is sprayed with a pesticide to control spiders. She didn't see any spiders for a period of time, but eventually, sh

kirza4 [7]

A) The spiders with pesticide-resistant traits survived & reproduced.

The spiders that survived the pesticide passed on their genes to their offspring, and when their offspring came back to Stacy's house, they had the resistance to pesticide because of their parents.

7 0

3 years ago

Abus has velocity 20m/stowards east and another bus has velocity 15m/s

Afina-wow [57]

Answer:

20x120=2400m equivalent to 2km

15x120 =1800 m = 1.8km

2km +1.8 km = 3.8 km

3 0

3 years ago

Work and energy both have the unit?

sveta [45]

The both have the unit (J) for Jules

6 0

4 years ago

A long string carries a wave; a 6.00-m segment of the string contains four complete wavelengths and has a mass of 180g. The stri

Viktor [21]

A long string carries the wave; a segment of the string measuring 6.00 meters in length and weighing 180 grams contains four full wavelengths. The string vibrates sinusoidally at a 50.0 Hz frequency with a 15.0 cm peak-to-valley displacement. The vertical distance between the farthest positive and negative positions is known as the "peak-to-valley" distance. The function that describes this wave traveling in the positive x direction is $y=(7.50 \mathrm{~cm}) \sin \left(\frac{4 \pi}{3} \times-314 t+\phi\right)$ .

$\begin{aligned}& f=500 \mathrm{~Hz} \\&\mu=\frac{180 \times 10^{-3}}{6}=3 \times 10^{-2} K g / m \\&2 A=15 \times 10^{-2} m \\&A=7.5 \times 10^{-2} m \\&4 \lambda=6, \lambda=3 / 2 m \text {. and } v=f \lambda=75 m / \mathrm{sec} \\&\omega=2 \pi f=100 \pi \text { also } K=\frac{\omega}{v}=\frac{4 \pi}{3}\end{aligned}$

If phase constant is $\phi$ then

$\therefore$ equation is $y=7.5 \times 10^{-2} \sin \left[100 \pi t-\frac{4 \pi}{3} x+\phi\right]$

∴ equation is $y=(7.50 \mathrm{~cm}) \sin \left(\frac{4 \pi}{3} \times-314 t+\phi\right)$

A wave is a disturbance that moves from one location to another, carrying energy but not always matter.
The square of the equation provides a probability density map of the locations where an electron has a specific statistical likelihood to be at any given moment in time. Wave functions have no direct physical meaning.

To know more about Wave functions visit : brainly.com/question/3639648

#SPJ4

8 0

2 years ago

Question 7 (3 points)

vagabundo [1.1K]

Answer:

how you can convert electrical energy to mechanical energy

Explanation:

In the Electric Motor lab, what did you attempt to demonstrate with the electric motor?

In the Electric Motor lab, the experiment usually demonstrate energy conversion process, from electrical energy to mechanical energy. This mechanical energy can also be converted back to electrical energy using a generator.

Therefore, what you attempted to demonstrate with the electric motor, is how you can convert electrical energy to mechanical energy

5 0

4 years ago