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
tatiyna
3 years ago
11

Which of the following is true?

Physics
1 answer:
fenix001 [56]3 years ago
8 0

Answer:

Its either A. Or C cause ive had a question like this before So Im sure But if not Then Im so sorry

You might be interested in
A 0.560 kg snowball is fired from a cliff 14.2 m high with an initial velocity of 13.3 m/s, directed 26.0° above the horizontal.
enot [183]

Answer:

a) v = 21.34 m/s

b) v = 21.34 m/s

c) v = 21.34 m/s

Explanation:

Mass of the snowball, m = 0.560 kg

Height of the cliff, h = 14.2 m

Initial velocity of the ball, u = 13.3 m/s

θ = 26°

The speed of the slow ball as it reaches the ground, v = ?

The initial Kinetic energy of the snow ball, KE_{0}  = 0.5 mu^{2}

Potential energy of the snow ball at the given height, PE = mgh

Final Kinetic energy of the ball as it reaches the ground, KE_{f} = 0.5mv^{2}

a) Using the principle of energy conservation,

KE_{0} + PE = KE_{f} \\0.5mu^{2} + mgh = 0.5mv^{2}\\v^{2} =2( 0.5u^{2} + gh)\\v^{2} =u^{2} + 2gh\\v = \sqrt{u^{2} + 2gh} \\v = \sqrt{13.3^{2} + 2*9.8*14.2}\\v = 21.34 m/s

b) The speed remains v = 21.34 m/s since it is not a function of the angle of launch

c)The principle of energy conservation used cancels out the mass of the object, therefore the speed is not dependent on mass

v = 21. 34 m/s

7 0
3 years ago
a care starting from rest has an acceleration 0.3 m/s square, calculate the velocity and distance travelled by this car after 2
Anna [14]

Answer:

Final velocity (v) = 36 m/s

Distance traveled (s) = 2,160 m

Explanation:

Given:

Initial velocity (u) = 0

Acceleration (a) = 0.3 m/s

Time travel (t) = 2 minutes = 120 seconds

Find:

Final velocity (v) = ?

Distance traveled (s) = ?

Computation:

v = u + at

v = 0 + 0.3(120)

v = 0.3(120)

v = 36 m/s

Final velocity (v) = 36 m/s

Distance traveled (s) = ut + (1/2)at²

Distance traveled (s) = (0.5)(0.3 × 120 × 120)

Distance traveled (s) = 2,160 m

3 0
3 years ago
Give an example of an issue that is currently being debated in the public sphere? Why is this issue a hot topic?
aliya0001 [1]
Palestine vs. Israel Palestine is demanding freedom from Israel when they already have their freedom
6 0
2 years ago
Which of the following is in correct chronological order?
tankabanditka [31]

Answer:

Hey there

I will give you the correct answer based on Wikipedia timelines.

You are correct (Copernicus, Brahe, Kepler, Newton)

Nicolaus Copernicus: 19 February 1473 – 24 May 1543.

Tyco Brahe: 14 December 1546 – 24 October 1601.

Johannes Kepler: 27 December 1571 – 15 November 1630.

I

Issac Newton: 4 January 1643 – 31 March 1727.

Brainly is GREATLY appreciated. it took me 30 minutes to get all the timelines!!!

4 0
3 years ago
This person laid the ground work for the second law of thermodynamics
Alekssandra [29.7K]
Nicolas léonard Sadi Carnot is also describe as the father of thermodynamic
3 0
3 years ago
Other questions:
  • Which of the following has to happen before the eardrum begins to vibrate with the same frequency as the source of the sound wav
    14·2 answers
  • Does spilled milk have higher or lower entropy
    6·1 answer
  • A soccer player is running upfield at 10 m/s and comes to a stop in 3 seconds facing the same direction. What is his acceleratio
    11·1 answer
  • In which scenario is elastic potential energy present?
    8·2 answers
  • Which two statements about an electric motor are true?
    8·2 answers
  • 3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposit
    9·1 answer
  • Calculate the kinetic energy of a moving 4 kg object traveling at a velocity of 3 m/a
    8·1 answer
  • Question below in photos!!(there are 2 photos) Please answer! Will mark BRAINLIEST! ⬇⬇⬇⬇⬇⬇⬇
    10·1 answer
  • In this equation Fs=-kx, Fs means:
    12·1 answer
  • A proton moves in the negative x-direction through a uniform magnetic field in the negative y-direction what is the direction of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!