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
choli [55]
3 years ago
15

How long does it take a car to cross a 20m bridge if it starts from rest and accelerates at 5 m/s^2?

Physics
1 answer:
polet [3.4K]3 years ago
5 0

The correct answer is 2.8s

You might be interested in
Which statement best defines an electric field?
stich3 [128]

Answer:

D

Explanation:

3 0
2 years ago
It is known that birds can detect the earth's magnetic field, but the mechanism of how they do this is not known. It has been su
san4es73 [151]

Answer:

EMF = 5.01 \times 10^{-4} Volts

Explanation:

Here we know that the EMF induced in this Field is given as

EMF = vBL

here B = perpendicular component of magnetic field

v = speed of the bird

L = length of the wings

now we have

B = 5\times 10^{-5} sin40

v = 13 m/s

L = 1.2 m

now we have

EMF = (13)(3.21 \times 10^{-5})(1.2)

EMF = 5.01 \times 10^{-4} Volts

8 0
3 years ago
rocks move trough the rock cycle through uplift,folding,and faulting cased by movements of the earth´s________
garik1379 [7]
Tectonic plates and convection cells move tectonic plates
4 0
3 years ago
A truck accidentally rolls down a driveway for 8.0\,\text m8.0m8, point, 0, start text, m, end text while a person pushes agains
gavmur [86]

Answer:

Explanation:

According to work energy theorem

change in kinetic energy of truck = work done against it

work done against it = force x displacement

= - 850 x 8 = 6800 J

change in kinetic energy of truck = - 6800 J .

energy will be reduced by 6800 J

5 0
3 years ago
On a day when the temperature reaches 50°F, the temperature in degrees Celsius is: 20°C
anzhelika [568]

Answer:

10°C

Explanation:

To convert °F to °C, we use the formula:

°C =  (°F - 32) * ( 5/9)

So, to convert 50°F to the equivalent  in °C, we can proceed as follows:  

°C = ( 50 - 32 ) * (5/9)  

°C = ( 18 ) *  (5/9), which is, approximately,

°C = 9.999999999... ≈ 10 (5/9 ≈0.555555...)

So, 50°F is equivalent to 10°C.

3 0
2 years ago
Other questions:
  • Cochlear implants are surgically implanted electronic devices that send __________. A. electronic signals to the auditory nerve
    7·2 answers
  • A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The
    13·1 answer
  • A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel
    15·1 answer
  • What is the mean of the data set 2ml, 4ml, 6ml, 8ml, 8ml, 8ml
    5·1 answer
  • 1. An astronaut in a spacesuit has a mass of 80 kilograms. What is the weight of this astronaut on the surface of the Moon where
    15·1 answer
  • Products must equal which in a chemical reaction?
    10·1 answer
  • A ray of light travelling obliquely from a rarer medium to a denser medium goes _______​
    8·1 answer
  • What type of tissue in the heart pumps blood throughout the body?
    12·1 answer
  • 10. How far did the crate move horizontally?
    14·1 answer
  • The average reaction time is 1.5 seconds?<br><br> True<br> False
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!