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
Alex787 [66]
3 years ago
5

A grandfather clock is controlled by a swinging brass pendulum that is 1.2 m long at a temperature of 27°C. (a) What is the leng

th of the pendulum rod when the temperature drops to 0.0°C? (Round your answer to four significant figures.) mm
Physics
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

L2 = 1.1994 m

the length of the pendulum rod when the temperature drops to 0.0°C is 1.1994 m

Explanation:

Given;

Initial length L1 = 1.2m

Initial temperature T1 = 27°C

Final temperature T2 = 0.0°C

Linear expansion coefficient of brass x = 1.9 × 10^-5 /°C

The change i length ∆L;

∆L = L2 - L1

L2 = L1 + ∆L ...........1

∆L = xL1(∆T)

∆L = xL1(T2 - T1) ......2

Substituting the given values into equation 2;

∆L = 1.9 × 10^-5 /°C × 1.2m × (0 - 27)

∆L = 1.9 × 10^-5 /°C × 1.2m × (- 27)

∆L = -6.156 × 10^-4 m

From equation 1;

L2 = L1 + ∆L

Substituting the values;

L2 = 1.2 m + (- 6.156 × 10^-4 m)

L2 = 1.2 m - 6.156 × 10^-4 m

L2 = 1.1993844 m

L2 = 1.1994 m

the length of the pendulum rod when the temperature drops to 0.0°C is 1.1994 m

You might be interested in
You are trying to find the amount of heat transferred between two substances. In order to do this, you plan
Zarrin [17]

Answer:

do you have kids ?

Explanation:

i am a 14 year old girl

7 0
2 years ago
What if the earth was flat
mina [271]
Then everyone would fall off the surface
5 0
2 years ago
Read 2 more answers
Which of the following could classify as a non-essential need according to the hierarchy of needs? A. healthy food B. human cont
sergejj [24]
D. According to the hierarchy of needs the body and mind must be taken care of first and foremost.

4 0
3 years ago
Make a free-body diagram of someone pushing a refrigerator that shows:
adoni [48]

Answer:

head fah ueah ik

Explanation:

5 0
3 years ago
4. With a diameter that's 11 times larger than Earth's, _______ is the largest planet.
Komok [63]

The answer is B.Jupiter

7 0
3 years ago
Other questions:
  • A 12-inch object is placed 30 inches in front of a plane mirror. A ray of light from the object strikes the mirror at a 45-degre
    5·2 answers
  • under what conditions would a scale record a weight for an object which is equal to the magnitude of the gravitational force on
    14·2 answers
  • A sphere of radius R = 0.295 m and uniform charge density -151 nC/m^3 lies at the center of a spherical, conducting shell of inn
    12·1 answer
  • How can you make the moon go around in a bigger circle
    5·2 answers
  • What two variables affect how loud you hear sound
    10·2 answers
  • What impulse occurs when an average force of 7.0 N is exerted on a cart for 2.5 s ?
    14·1 answer
  • A rifle is fired in a valley with parallel vertical walls. The echo from one wall is heard 1.55 s after the rifle was fired. The
    7·1 answer
  • Your home energy bill is given in what kind of units?
    8·1 answer
  • What is lower body strength
    12·2 answers
  • A 20 kg wagon is rolling to the right across a floor. A person attempts to catch and stop the crate and applies a force of 70 N,
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!