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
14

An experiment is conducted to determine how the arm length of a pendulum effects its period. The experimental design calls for v

arying the length of the arm and the mass of the bob. Which is true about this experiment, based on good experimental design?
a. Only the arm length should be changed. The mass should remain the same.
b. The force applied to the mass should be varied for trial.
c. The material the arm is made of should be varied for each trial.
d. Only the mass should be changed. The arm length should remain the same
Physics
2 answers:
Anestetic [448]3 years ago
8 0

Okay so don't quote me on this but I believe the answer is A) I'm saying this because B and C make no sense. and you can't change the mass of something without changing it totally.

Vanyuwa [196]3 years ago
6 0

Answer:

The answer is A

Explanation:

You might be interested in
A negatively charged particle is moving to the right, directly above a wire have a current flowing to the right. In which direct
Varvara68 [4.7K]

Answer:

C) upward

Explanation:

The problem can be solved by using the right-hand rule.

First of all, we notice at the location of the negatively charged particle (above the wire), the magnetic field produced by the wire points out of the page (because the current is to the right, so by using the right hand, putting the thumb to the right (as the current) and wrapping the other fingers around it, we see that the direction of the field above the wire is out of the page).

Now we can apply the right hand rule to the charged particle:

- index finger: velocity of the particle, to the right

- middle finger: direction of the magnetic field, out of the page

- thumb: direction of the force, downward --> however, the charge is negative, so we must reverse the direction --> upward

Therefore, the direction of  the magnetic force is upward.

3 0
3 years ago
PLEASE HELP<br> Due in a few minutes!!!!!<br> Have not finished yet :
Zigmanuir [339]
The North Star, or Polaris, is the brightest star in the constellation Ursa Minor, the little bear (also known as the Little Dipper). As viewed by observers in the Northern Hemisphere, Polaris occupies a special place
5 0
3 years ago
If you were given distance and period of time, what can you calculate?
antiseptic1488 [7]

If you were given distance & period of time, you would be able to calculate the speed.

Hope this helps!

3 0
3 years ago
A large bottle contains a number of medicinal tablets is 0.5kg. Calculate the number of tablets in the bottle?
Alexeev081 [22]

Answer:

the answer is 5k in the bottle have

8 0
3 years ago
What is the numeric value of a mole for atoms or molecules?
Talja [164]

Answer:

6.02×10²³

Explanation:

Mole measures the number of particles in a specific substance. The numeric value of a mole for atom or molecules is approximately 6.02×10²³ atoms or molecules.

5 0
3 years ago
Other questions:
  • A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3.What quantity did the stu
    5·2 answers
  • When you measure the boiling point of mercury, you are investigating a ___. a.chemical change b.chemical property c.physical cha
    11·1 answer
  • (PLS HELP 20 POINTS, IM TOO DUMB FOR THIS) What is the total momentum of the system after the collision?​
    13·1 answer
  • A river flows from south to north at 5.4 km/hr. on the west bank of this river, a boat launches and travels perpendicular to the
    5·1 answer
  • An ant can travel approximately 30 meters per minute. How many meters could an ant move in 45 minutes?
    7·2 answers
  • Select all of the answers that apply.
    15·2 answers
  • Ag,Au and Cu are called coinage metals why plzzzz hurry its urgent plzzz​
    6·1 answer
  • A .001 kg bead slides without friction around a loop-the-loop. The bead is released from a height of 20.6 m from the bottom of t
    11·1 answer
  • The diagram shows an LED light bulb.
    9·1 answer
  • Block A of mass 2.0 kg is released from rest at the top of a 3.6 m long plane inclined at an angle of 30o, as shown in the figur
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!