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
butalik [34]
3 years ago
15

HELPPPpPppPp!!!! !!!!!!!

Physics
2 answers:
matrenka [14]3 years ago
8 0

Answer:

21.0

Explanation:

kiruha [24]3 years ago
8 0

Answer:

D

Explanation:

You might be interested in
Select the order in which the flow of current is listed from greatest to the least.
Radda [10]

Answer:

Short circuit, closed circuit, open circuit

7 0
3 years ago
Read 2 more answers
A Car with drives into a solid object with 70 km/h, from which height would it fall if it was in free fall?​
Ilya [14]

Answer:

18.9 m.

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 0 m/s

Final velocity (v) = 70 km/h

Height (h) =?

Next, we shall convert 70 km/h to m/s. This can be obtained as follow:

3.6 km/h = 1 m/s

Therefore,

70 km/h = 70 km/h × 1 m/s / 3.6 km/h

70 km/h = 19.44 m/s

Finally, we shall determine the height. This can be obtained as follow:

Initial velocity (u) = 0 m/s

Final velocity (v) = 19.44 m/s

Acceleration due to gravity (g) = 10 m/s²

Height (h) =?

v² = u² + 2gh

19.44² = 0² + (2 × 10 × h)

377.9136 = 0 + 20h

377.9136 = 20h

Divide both side by 20

h = 377.9136 / 20

h = 18.9 m

Thus, the car will fall from a height of 18.9 m

8 0
3 years ago
A potential difference of 71 mV is developed across the ends of a 12.0-cm-long wire as it moves through a 0.27 T uniform magneti
Dafna1 [17]

Answer:

Explanation: please see attached file I attached the answer to your question.

7 0
3 years ago
An object at rest starts accelerating.
Shalnov [3]

Answer:

<u>We are given: </u>

initial velocity (u) = 0 m/s

final velocity (v) = 10 m/s

displacement (s) = 20 m

acceleration (a) = a m/s/s

<u>Solving for 'a'</u>

From the third equation of motion:

v² - u² = 2as

replacing the variables

(10)² - (0)² = 2(a)(20)

100 = 40a

a = 100 / 40

a = 2.5 m/s²

6 0
3 years ago
Emeka carried out a reaction in which a gas was given off. He followed the progress of the reaction by measuring the mass of the
pickupchik [31]

Answer:

17.5

or

1.1 g/min

I know it's one of these, try getting a second opinion

6 0
3 years ago
Other questions:
  • Hedea made a study chart about nuclear energy. Which best describes the error in Hedea’s chart? The nuclei of atoms are split ap
    5·2 answers
  • \a stone is dropped from the top of a cliff. it hits the ground below after 3.80s. how high is the cliff in meters?
    7·1 answer
  • When a patient is lying face down like in the image below, what position is she said to be in? Body is lying horizontally, face-
    6·1 answer
  • A person walks 12 meters to the west and then 16 meters back to the east. what is the distance covered and the direction of disp
    10·1 answer
  • A woman standing before a cliff claps her hands, and 2.8s later she hears the echo. How far away is the cliff? The speed of soun
    5·1 answer
  • What type of electromagnetic radiation is used by mobile phones?
    15·2 answers
  • According to Newton's third law of motion, if you push against a wall, the wall will __________.
    15·2 answers
  • In lenzs law: If the current flow along the direction of deflection of the galvanometer, predict the direction of current in the
    6·1 answer
  • Moving east with a constant velocity of 30 m/s for 5 seconds. What is the object's
    9·1 answer
  • A boy on board a cruise ship drops a 30. 0 gm marble into the ocean. If the resistive force proportionality constant is 0. 500 k
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!