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
tatyana61 [14]
4 years ago
12

Explain why a description of motion has to be in reference to something else. ( I don't know if this is physics, it's science )

THANKS FOR THE HELP!!!!!
Physics
1 answer:
timurjin [86]4 years ago
8 0
Description of motion has to refer to the change in distance over a certain amount of time, or balanced forces
You might be interested in
During World War I, Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away. This gun also had a long barrel.
Harrizon [31]

Answer:

d. to allow the force of expanding gases from the gunpowder to act for a longer time

Explanation:

7 0
4 years ago
What is the maximum amount of human weight
Lera25 [3.4K]

Answer:

AN average heavy weight is 175 pounds. The heaviest weight ever recorded though was 1,400 pounds, or 635 kilograms.

7 0
3 years ago
A hot-air balloon is rising straight up with a speed of 4.6 m/s. a ballast bag is released from rest relative to the balloon at
kherson [118]

The time taken by the ballast bag to reach the ground is 2.18 s

The ballast bag at rest with respect to the balloon has the upward velocity (u) of 4.6 m/s , which is the velocity of the balloon. When it is dropped from the balloon, its motion is similar to an object thrown upwards with an initial velocity <em>u </em>and it falls under the acceleration due to gravity<em> g.</em>

Taking the upward direction as positive and the downward direction as negative, the following equation of motion may be used.

s=ut+\frac{1}{2}at^2

The bag makes a net displacement <em>s</em> of 13.4 m downwards, hence

s=-13.4 m

Its initial velocity is

u=+4.6 m/s

The acceleration due to gravity acts downwards and hence it is negative.

g=-9.8 m/s^2

Use the values in the equation of motion and write an equation for t.

s=ut+\frac{1}{2} at^2 \\ -13.4=4.6t-\frac{1}{2}(9.8)t^2\\ 4.9t^2-4.6t-13.4=0

Solving the equation for t and taking only the positive value for t,

t=2.18 s

4 0
3 years ago
f 720-nm and 620-nm light passes through two slits 0.68 mm apart, how far apart are the second-order fringes for these two wavel
valkas [14]

Answer:

0.0003 m = 0.3 mm

Explanation:

For constructive interference in the Young's experiment.

The position of the mth fringe from the central fringe is given by

y = L(mλ/d)

λ = wavelength = 720 nm = 720 × 10⁻⁹ m

L = distance between slits and screen respectively = 1.0 m

d = separation of slits = 0.68 mm = 0.68 × 10⁻³ m

m = 2

y = 1(2 × 720 × 10⁻⁹/(0.68 × 10⁻³) = 0.00212 m = 2.12 mm

For the 620 nm light,

y = 1(2 × 620 × 10⁻⁹/(0.68 × 10⁻³) = 0.00182 m = 1.82 mm

Distance apart = 2.12 - 1.82 = 0.3 mm = 0.0003 m

8 0
3 years ago
A particular spring has a spring constant of 25 N/m.
kotegsom [21]

Answer:

<h2>2.8×10^-3</h2>

e.p.e =  \frac{1}{2} k {x}^{2}   \\   = \frac{1}{2}  \times 25 \times (0.015m)^{2}  \\  = 0.0028125

<u>0.0028125N</u><u> </u>

8 0
3 years ago
Other questions:
  • 3 question ple answer
    15·1 answer
  • Carter pushes a bag full of basketball jerseys across the gym floor. The he pushes with a constant force of 21 newtons. If he pu
    9·1 answer
  • What is the average angular velocity of the seconds hand of a clock?
    8·1 answer
  • What is the frequncy of a wave that has a speed of 8m/s and a wave length of 2?
    6·1 answer
  • The magnitude of a vector can be different in different coordinate systems. The magnitude of a vector can be different in differ
    7·1 answer
  • The formula for distance divided by time
    12·1 answer
  • Why might the term red hot be misleading? (relating to stars)
    7·1 answer
  • an object travels in circular motion with a speed of 11.40 m/s. What is the centripetal acceleration if the radius of the circle
    15·1 answer
  • Help please i need to get this grade up​
    10·2 answers
  • In Young experiment, a light with a wavelength of 410 nm falls on two slits
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!