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
algol [13]
3 years ago
15

A car starts at point A from rest. It returns to point A in 30 seconds. The race from start to finish is 1 mile.

Physics
1 answer:
SVEN [57.7K]3 years ago
3 0
D the answer you’re looking for is letter d.
You might be interested in
Pls help. This is about heat. I got the answer, just need the working
Mars2501 [29]

Answer:

See below

Explanation:

You have to heat the calorimeter to 100 C  from 20 C

  this will take   .20 kg *    390 j /kg-C   *  80 C = <u>6240 j</u>

You have to heat the mass of water to boiling point (100 C ) from 20C

this will take    

    .50 kg * 4182 j/kg-C  * 80 = <u>167,280 j </u>

AND you have to add enough heat to boil off  .03 kg of water:

   .03 kg * (2260000 j/kg-C )  =<u> 67,800 j</u>

<u />

Power = joules / sec =  (6240 + 167280 + 67800) / 274.8 =<u> 878 watts </u>

<u />

<u>Your answer may differ just a bit for slightly different or rounded values of specific heat or heat of fusion for water .....</u>

7 0
2 years ago
The standard deviation of Eric’s data is 0.8°C. Martha conducted the same experiment. Her average temperature was 35.1 with a st
REY [17]

Answer:

less precise than

Explanation:

5 0
3 years ago
How long must a tow truck apply a force of 600 N to increase the speed of a 1,500 kg car at rest to 2 m/s?
slega [8]

The time the truck must apply the given force to increase its speed to given value is 5 s.

The given parameters;

  • <em>applied force, F = 600 N</em>
  • <em>mass of the truck, m = 1,500 kg</em>
  • <em>speed of the truck, v = 2 m/s</em>

The force applied to the truck is determined by Newton's second law of motion; <em>which states that the force applied to an object is directly proportional to the product of mass and acceleration of the object.</em>

F = ma

F = \frac{mv}{t} \\\\t = \frac{mv}{F} \\\\t = \frac{1500 \times 2}{600} \\\\t = 5 \ s

Thus, the time the truck must apply the given force to increase its speed to given value is 5 s.

Learn more here:brainly.com/question/1988795

7 0
2 years ago
The electromagnetic waves that have the lowest frequencies are called
o-na [289]
A. Radio waves
Have the lowest frequencies
4 0
3 years ago
A natural atom can be negatively charged by
svet-max [94.6K]

Answer:

By Gaining Electrons

Explanation:

A nuetral atom is negative when it gains electrons, and it can be positive when it loses electrons.

4 0
2 years ago
Read 2 more answers
Other questions:
  • What part causes the disc brake caliper piston to retract when the brakes are released?
    13·1 answer
  • Atmospheric pressure changes ____.
    15·2 answers
  • A pulse moving to the right along the x axis is represented by the function of
    9·1 answer
  • Once broken into parts curved motion can be worked as ________________ problems along both axes.
    11·1 answer
  • An "energy bar" contains 26 g of carbohydrates. For the steps and strategies involved in solving a similar problem, you may view
    9·1 answer
  • The magnetic field lines due to a straight, current-carrying wire are __________. The magnetic field lines due to a straight, cu
    9·1 answer
  • A hot iron ball is dropped into 200.0 g of cool water. The water temperature increases by 2.0 C and the temperature of the ball
    5·1 answer
  • - Explain why an aircraft will tend to lose height
    11·1 answer
  • Which of the following are vector quantities?
    11·2 answers
  • A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floo
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!