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
Alexandra [31]
3 years ago
13

What is acceleration, and what units do we use to measure it? *

Physics
1 answer:
Scrat [10]3 years ago
7 0

Answer:

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2).

Explanation:

You might be interested in
Which renewable resource produces the most electricity in the United States? geothermal energy solar energy wind power hydroelec
Anna71 [15]

Hydroelectricity is the best answer.

This is an article by the EIA, but the pie graph is the most helpful: https://www.eia.gov/energyexplained/?page=us_energy_home

8 0
3 years ago
Read 2 more answers
A 50 kg bobsled slides down an ice track starting (at zero initial speed) from the top of a(n) 184 m high hill. The acceleration
Feliz [49]

Answer:

Explanation:

Given

mass of ice m=50\ kg

Height of hill h=184\ m

Neglecting air resistance

As resistance is absent so Energy at top of hill and at the bottom hill is conserved.

Energy at top is equal to Potential Energy

E_T=mgh=50\times 9.8\times 184

Energy at bottom is equal to kinetic energy at bottom

E_B=\frac{1}{2}mv^2

E_T=E_B

50\times 9.8\times 184=\frac{1}{2}\times 50\times v^2

v=\sqrt{2\times 9.8\times 184}

v=60.05\ m/s                          

3 0
4 years ago
Help pls☹️☹️☹️☹️☹️<br> anyone
Alex17521 [72]
Most of the question 1 is chopped off so I'll try my best to answer.

1ai) In a telephone, the sound is converted into electrical signals before being sent through the wire before converted back into sound.

1aii) Sound travels by the collision between particles. In solids, the particles are closely packed (as compared to air molecules) and thus collide with their neighbors quickly after being disturbed, allowing for sound to be passed on at a faster rate.

b) Can't help much on this one.  
4 0
3 years ago
One end of a piano wire is wrapped around a cylindrical tuning peg and the other end is fixed in place. The tuning peg is turned
liq [111]

Answer:

T = 3183 N

Explanation:

When the screw is turned by two turns then change in the length of the wire is given as

\Delta L = 2(2\pi r)

\Delta L = 4\pi r

\Delta L = 4(\pi)(1.0 mm)

\Delta L = 12.56 mm

now we know by the formula of Young's modulus

Y = \frac{T/A}{\Delta L/L}

so we have

T = \frac{AY \Delta L}{L}

T = \frac{\pi (0.55 \times 10^{-3})^2(2.0 \times 10^{11})(12.56 \times 10^{-3})}{0.75}

T = 3183 N

3 0
3 years ago
Join my zoom<br><br> wednesday October 7 2020 at six 40
Pani-rosa [81]

Answer:

Lol no

Explanation:

Whats the zoom link

7 0
4 years ago
Read 2 more answers
Other questions:
  • A piston–cylinder device initially contains steam at 3.5 MPa, superheated by 5°C. Now, steam loses heat to the surroundings and
    15·1 answer
  • A force of 210 N is applied to an object and the object accelerates at 14m/s2. Determine the mass of the object in kg.
    14·1 answer
  • which characteristic of good leadership is demonstrated when a president acknowledges that triumphs were done not for personal g
    5·2 answers
  • If a wave had a period of 0.077 sec, it had a frequency of ?
    5·1 answer
  • PLZ HELP MEON Y TEST IF U HELLP ME ON MY TEST ILL GIVE U BRAINLET
    14·1 answer
  • En el MCU, la aceleración es: a) constante b) Varía en módulo, direccion, y sentido c) constante solo en el módulo d) constante
    12·1 answer
  • What makes a ship float​
    5·1 answer
  • Name six simple machines. Give an example of each machine​
    11·2 answers
  • if a ball is released from a height 80cm how long would it take the ball to reach the ground when g= 10m per seconds​
    10·2 answers
  • Beta emission, alpha emission, positron emission, and electron capture are processes that result in a change in atomic number. W
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!