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
SIZIF [17.4K]
3 years ago
9

We’re measuring the velocity, so that we can find the change in kinetic energy. Where should you place the photogate to measure

the cart’s velocity? Briefly explain your reasoning.
Physics
1 answer:
7nadin3 [17]3 years ago
4 0

Answer:

minimum two photogate

Explanation:

The photogate allows us to activate the measurement of time, so we must place at least two of them, one at the beginning of the movement to measure the initial time and another at the end of the movement to measure the final time, of course we must have measured the distance. This gives us the average speed between the two photocells

For measurements with more changes curves, slopes, one photogate must be placed at the beginning of the curve or slope and another at the end.

You might be interested in
Which of the following best describes a noncontact force
Sonja [21]

Answer:

a force that is able to act at a distance

Explanation:

:)

7 0
3 years ago
Find the poing of center of gravity<br><br>plz show the steps...​
olasank [31]

Answer:

C

Explanation:

For a uniformly distributed mass, the center of gravity is also the geometric center.  For this shape, the center is at point C.

7 0
3 years ago
Which symbol is used for an alpha particle? a. β c. γ b. Δ d. α
xenn [34]
It is the very last answer

6 0
3 years ago
A pendulum can be formed by tying a small object, like a tennis ball, to a string, and then connecting the other end of the stri
Usimov [2.4K]

Answer:

1- t^3

2- t^2

3- t1

Explanation:

The acceleration produced in a body, while travelling in a circular motion, due to change in direction of motion is called centripetal acceleration. The formula of the centripetal acceleration is as follows:

ac = v²/r

where,

ac = centripetal acceleration

v = speed

r = radius

for a constant radius the centripetal acceleration will be directly proportional to the speed of object. The speed of pendulum will be lowest at t1 due to zero speed initially. Then the speed will increase gradually having greater speed at t^2 and the highest speed and centripetal acceleration at t^3. Therefore, the three instants in tie can be written in following order from greatest centripetal acceleration to lowest:

<u>1- t^3</u>

<u>2- t^2</u>

<u>3- t1</u>

5 0
3 years ago
Basic explanation of the scientific method
igomit [66]
There is a a thing. so you use the scientific method by
The observation, measuring, and the experiment. also the formulation and then testing of your hypothesis 
5 0
3 years ago
Other questions:
  • if a force is applied to an object is not greater than the starting friction what will happen to the object
    12·1 answer
  • Pitch describes the loudness of a sound. <br> True False?
    5·1 answer
  • Which of the following changes occurs naturally in a system over time?
    14·1 answer
  • If you increase the frequency of a sound wave four times what will happen to its speed
    13·2 answers
  • Why does the sky appear blue?
    15·2 answers
  • What’s contact force ?
    7·2 answers
  • According to the Guinness Book of World Records (1999) the highest rotary speed ever attained was 2010 m/s (4500 mph) The rotati
    9·1 answer
  • What is DC in electricity mean?
    9·1 answer
  • An arrow is fired vertically upwards by a bow and reaches an altitude of 134 m. Find the initial speed of the arrow on the groun
    8·1 answer
  • A car accelerates uniformly from rest to a speed of 10m/s. Calculate its acceleration
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!