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
ella [17]
3 years ago
7

A bus is moving with an acceleration of 4 m/s^2. If it was initially at rest,

Physics
2 answers:
shusha [124]3 years ago
6 0
Probably b) 6 m/s
Not sure
AlladinOne [14]3 years ago
6 0
Answer is a because it is duh
You might be interested in
It takes 52,000 Joules to heat a cup of coffee to boiling from room temperature. How long a piece of 20 cm wide Aluminum foil wo
vovikov84 [41]

Answer:

L = 1.11 x 10^{6} m, is the length of piece of 20 cm wide Aluminum foil to make capacitor large enough to hold 52000 J of energy.

Explanation:

Solution:

Data Given:

Heat Energy = 52000 J

Dielectric Constant of the plastic Bag = 3.7 = K

Thickness = 2.6 x 10^{5} m =d

V = 610 volts

A = width x Length

width = 20 cm = 20 x 10^{-2} m

Length = ?

So,

we know that,

U = 1/2 C Δv^{2}

U = 52000 J

C = ?

V = 610 volts'

So,

U = 1/2 C Δv^{2}  

52000 J = (0.5) x (C) x (610^{2})

C = 0.28 F

And we also know that,

C = \frac{K*E*A}{d}

E = 8.85 x 10 ^{-12}

K = 3.7

A = 0.20 x L

d = 2.6 x 10^{5} m

Plugging in the values into the formula, we get:

0.28 = \frac{3.7 * 8.85 .10^{-12} * (0.20 . L) }{2.6 . 10^{5} }

Solving for L, we get:

L = 1.11 x 10^{6} m,

is the length of piece of 20 cm wide Aluminum foil to make capacitor large enough to hold 52000 J of energy.  

7 0
3 years ago
What happens when an object is moved against gravity, such as rolling a toy car up a ramp?
BlackZzzverrR [31]

Answer:

it goes up until we help it to but the moment we stop support it gets affected by gravity and goes back

Explanation:

3 0
2 years ago
light of wavelength 520 nm falls on a slit that is 3.20 um wide. Estimate how far the first bright-sh difrrection fringe is
Westkost [7]

Answer:

because of the gravity of the earth

6 0
2 years ago
The effect of mechanical work on an object is _. (complete the sentence.)
Advocard [28]

Answer:

Displacement (i.e. change in its final position)

Explanation:

In classical mechanics work is described as the displacement of the body in the direction of the applied force.

<u>Mathematically given as:</u>

W=F.s\ cos\ \theta

where:

F = force on the body

s = displacement of the body

θ = angle between the force and direction of displacement

While force, acceleration, velocity can also be the answer for the blank space but the displacement effect is visible during and even after the work has been done, so one can notice the change in position of the object even when the person has not seen the process but just the initial condition of the body.

8 0
3 years ago
Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far a
Rashid [163]

Answer:

Distance of the object is 8.6 m

Explanation:

As we know that the speed of sound at t degree C is given as

v = 332 + 0.6 t

here we know that the temperature is

t = 20 degree C

so we have

v = 332 + 0.6(20)

v = 344 m/s

now we know that bat heard the echo of sound in 0.05 s

so the to and fro distance of the object is d + d = 2d

so we have

2 d = v\times t

2d = 344(0.05)

d = 8.6 m

7 0
3 years ago
Other questions:
  • Light of wavelength 476.1 nm falls on two slits spaced 0.29 mm apart. What is the required distance from the slits to the screen
    14·1 answer
  • Where are mid-ocean ridges formed?
    15·1 answer
  • Is a scientist who studies climate change. As part of a larger experiment, her work requires her to travel. Her company makes su
    11·1 answer
  • The following three hot samples have the same temperature. The same amount of heat is removed from each sample. Which one experi
    13·1 answer
  • What is the magnitude of the force a charge 25uc exerts on a charge 3mc 35 cm away?
    13·1 answer
  • We have starin which is 0.4 and area is 0.05 what is sigma
    10·1 answer
  • A small barge is being used to transport trucks across a river. If the barge is 10.00 m long by 8.00 m wide and sinks an additio
    11·1 answer
  • A physics student looks into a microscope and observes that small particles suspended in water are moving about in an irregular
    12·1 answer
  • How much time does it take for a plane To fly 5000 miles if the plane travels a speed of 500 miles per hour?
    13·2 answers
  • Number of vibrations (waves) in an amount of time
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!