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
Setler [38]
3 years ago
14

Thinking about an analogue clock, calculate the angular displacement in revolutions, radians and degrees for the following: • A

second hand after three minutes An hour hand after 20 minutes The minute hand as it moves from 9.15 to 12.45.​
Physics
1 answer:
Inessa [10]3 years ago
5 0

Answer:

1.047 rad

Explanation:

A secondhand makes a complete revolution (360 degrees) in 60 seconds, so it displaces 6 degrees for every second of elapsed time (360/60 = 6).

And in 10 seconds, it will make a displacement of 10 degrees (6 * 10 = 60).

Finally converting the result into Radians by multiplication with π/180.

You might be interested in
39.Explain the working mechanism of a mercury barometer.
alina1380 [7]
One end is sealed to prevent air from disturbing the scale and measures. Therefore, a Mercury Barometer works on the principle of balancing the atmospheric pressure with the volume of mercury present in the device
7 0
3 years ago
A pure lead bar 10 cm long is maintained with one end at T=300 K and the other at 310 K. The thermoelectric potential difference
dangina [55]

Answer:1.28v/k

Explanation:

Thermoelectric power is the same as Seebeck coefficient.

So the formula is S =Vemf/Th - Tl

= 12.8/310-300

S= 12.8/10

=1.28V/T

7 0
3 years ago
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 48.0 cm . The explorer finds that
Ber [7]

Answer:

g = 12.22 m/s²

Explanation:

The time period of this pendulum is given as follows:

T = \frac{time\ taken}{no. of cycles}\\\\T = \frac{144\ s}{93}\\\\T = 1.55\ s

but the formula for the time period of a simple pendulum is as follows:

T=2\pi \sqrt{\frac{l}{g}}\\

where,

L = length of pednulum = 48 cm = 0.48 m

g = magnitude of th gravitational acceleration on this planet = ?

Therefore,

1.55\ s=2\pi \sqrt{\frac{0.48\ m}{g}}\\\\\sqrt{g} = 2\pi \sqrt{\frac{0.48\ m}{1.55\ s}}\\\\g = 3.49^{2}\\

<u>g = 12.22 m/s²</u>

6 0
3 years ago
Which of these would best describe the outcome of increasing the kinetic energy of the molecules in the above picture? A) The te
VikaD [51]

Answer: Option (A) is the correct answer.

Explanation:

Relation between kinetic energy and temperature is as follows.

                K.E \propto \frac{3}{2}kT

As, kinetic energy is directly proportional to temperature. So, when there will be increase in temperature then there will also occur increase in kinetic energy of the particles of a substance.

And, when gas particles move slowly then it means kinetic energy of gas particles is very low. It also implies that temperature is low.

Thus, we can conclude that temperature will increase best describes the outcome of increasing the kinetic energy of the molecules in the above picture.

8 0
3 years ago
Read 2 more answers
Explain what happens as an object moves through each phase of matter.<br><br> ASAP PLEASE ????????
Yuri [45]

Explanation:

gas vibrate and move freely at high speeds, liquid vibrate, move about and slide past each other. solid vibrate (jiggle) but generally do not move from place to place

4 0
3 years ago
Other questions:
  • which organelle in the plant cell would mainly help the cell tack in water or get rid of water just like the potato did? this is
    14·1 answer
  • A ____________ star would have the hottest surface temperature.
    9·1 answer
  • What is the gravitational force between two trucks, each with a masof 2.0x10^4 k
    15·1 answer
  • What is responsible for the hole in the ozone layer?
    13·2 answers
  • Help me to solve this, please!!
    12·1 answer
  • A piano wire with mass 2.95 g and length 79.0 cm is stretched with a tension of 29.0 N . A wave with frequency 105 Hz and amplit
    5·1 answer
  • A cinder block is sitting on a platform 20m high. It weighs 79N.
    10·1 answer
  • Energy of motion is.
    7·2 answers
  • A pan hangs from a 50 cm spring. When a 10 kg mass is placed in the pan, it stretches the spring 6 cm. What is a function rule l
    15·1 answer
  • Help me plzzzzz<br> Will give Brainlyest
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!