1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bond [772]
3 years ago
12

Calculate the instantaneous speed of an apple 8 seconds after being dropped from rest.

Physics
1 answer:
Lynna [10]3 years ago
8 0
Vfinal = Vinitial + at
Vinitial = 0
a = 9.8 m/s^2
t = 8s
Vfinal = 0 + 9.8 * 8
ANSWER: 78.4 m/s
You might be interested in
2. The ability to keep<br> upright posture while standing or moving
Masteriza [31]
Is balancing .
Hope this is helpful
4 0
3 years ago
What does itmean to have an acceleration of 8 m/s2
Masteriza [31]

Answer:

The answer is option A.

You speed up 8 m/s every second

Hope this helps you

8 0
3 years ago
Read 2 more answers
Parallel rays of monochromatic light with wavelength 571nm illuminate two identical slits and produce an interference pattern on
Natasha2012 [34]

Answer:

8.8\times 10^{-6} W/m^2

Explanation:

We are given that

Wavelength,\lambda=571 nm=571\times 10^{-9} m

1 nm=10^{-9} m

R=75 cm=\frac{75}{100}=0.75 m

1 m=100 cm

d=0.640 mm=0.64\times 10^{-3} m

1 mm=10^{-3} m

a=0.434 mm=0.434\times 10^{-3} m

y=0.830 mm=0.830\times 10^{-3} m

I_0=5.00\times 10^{-4}W/m^2

tan\theta=\frac{y}{R}

\theta=\frac{0.830\times 10^{-3}}{0.75\times 10^{-2}}

\theta=1.1\times 10^{-3}rad

tan\theta\approx \theta

Because \theta is small.

\phi=\frac{2\pi dsin\theta}{\lambda}

\sin\theta\approx \theta,

Therefore

\phi=\frac{2\times\pi\times 0.64\times 10^{-3}\times 1.1\times 10^{-3}}{571\times 10^{-9}}

\phi=7.74 rad

\beta=\frac{2\pi a\theta}{\lambda}

\beta=5.3 rad

I=I_0cos^2(\frac{\phi}{2})(\frac{sin\frac{\beta}{2}}{\frac{\beta}{2}})^2

I=5\times 10^{-4}cos^2(\frac{7.74}{2})(\frac{sin\frac{5.3}{2}}{\frac{5.3}{2}})^2

I=8.8\times 10^{-6} W/m^2

6 0
3 years ago
Whats the similarities of rogue waves and tsunamis
Trava [24]
<span>Rogue wave is caused in open water not caused by earthquake. Tsunami is caused by an earthquake, bottom of the ocean/water.</span>
7 0
3 years ago
Read 2 more answers
An angle of refraction is the angle between the refracted ray and the
ivolga24 [154]
<span>An angle of refraction is the angle between the refracted ray and the "Normal ray"

Hope this helps!</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Why does water stay in a straw if you put your finger over it?
    15·1 answer
  • Why did the magnitude of the doppler shift increase as the velocity of the sound source increased?
    5·2 answers
  • A wave with a frequency of 0.5 Hz and a speed of 10 m/s has a wavelength of a. 50 m. c. 20 m. b. 0.5 m. d. 0.2 m.
    15·1 answer
  • A wave with a period of 1⁄3 second has a frequency of A. 67 Hz. B. 33 Hz. C. 300 Hz. D. 3 Hz.
    13·1 answer
  • What is the net force when forces applied are 300 N to the right and 100 N to the right
    8·1 answer
  • How do you determine the acceleration of an object?
    11·2 answers
  • 1. In the circuit shown below, with each bulb holding a resistance of 100 ohms, how many amps of current are flowing? Express yo
    8·2 answers
  • Dr. Alley has helped drill many holes in ice sheets. Special tools can be lowered down the holes on cables, and tracked to learn
    11·1 answer
  • You are to drive to an interview in another town, at a distance of 310 km on an expressway. The interview is at 11:15 a.m. You p
    7·1 answer
  • Why are infrared waves located between microwaves and visible light on the electromagnetic spectrum?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!