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
charle [14.2K]
2 years ago
15

A student tries to measure the period of a pendulum that is already swinging

Physics
1 answer:
Alex17521 [72]2 years ago
5 0

Answer:

a. The student's mistake was that the student did not swing the pendulum and start the watch at the same time.

b. 1.2 s per swing.

c. The likely effect of her reaction time is that they will should subtract two seconds off the time.

Explanation:

You might be interested in
In a research facility, a person lies on a horizontal platform which floats on a film of air. When the person's heart beats, it
anastassius [24]

Answer: 3.48g

Explanation:

here, we will be using conservation of momentum to solve the problem. i.e the total momentum remains unchanged, unless an external force acts on the system. We'll in thus question, there is no external force acting in the system.

Remember, momentum = mass * velocity, then

mass of blood * velocity of blood = combined mass of subject and pallet * velocity of subject and pallet

Velocity of blood = 56.5cm = 0.565m

mass of blood * 0.565 = 54kg * (0.000063/0.160)

mass of blood * 0.565 = 54 * 0.00039375

mass of blood * 0.565 = 0.001969

mass of blood = 0.00348kg

Thus, the mass of blood that leaves the heart is 3.48g

7 0
3 years ago
Read 2 more answers
Which of the following statements about the conservation of momentum is not correct? Momentum is conserved for a system of objec
Olin [163]

Answer:

wrong statement :  Momentum is not conserved for a system of objects in a head-on collision.

Explanation:

In a head on collision of two objects , two equal and opposite forces are created at the point of collision . These two forces create two impulses in opposite direction which results in equal and opposite changes in momentum in each of them . Hence net change in momentum is zero. In this way momentum is conserved in head on collision of two objects.

3 0
3 years ago
What kind of energy is in a rock at the edge of a cliff.
soldi70 [24.7K]

Answer:

kinetic energy

Explanation:

8 0
2 years ago
Failure to accomplish Erikson’s psychosocial task of late adulthood leads to despair.
Y_Kistochka [10]
False is the answer
6 0
3 years ago
Read 2 more answers
Phân biệt các đặc điểm khác nhau giữa chất rắn, chất lỏng
vitfil [10]

Answer:

şen çal kapimi turkish drama

6 0
3 years ago
Other questions:
  • What is the purpose of a lanyard attached to an ignition safety switch??
    8·2 answers
  • Which of these is the most likely prediction that the meteorologist would make about the weather? There is a possibility of
    11·1 answer
  • Determine which of the following moving objects obey the equations of projectile motion developed in this topic. A ball is throw
    5·1 answer
  • Which of these oceanic landforms is similar to a canyon?
    15·2 answers
  • During a 72-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 6.0-mA curre
    5·1 answer
  • what is the kinetic energy of a hammer that starts from rest and decreases its potential energy by 10k?
    14·1 answer
  • Why can you not put diesel in a regular car?
    6·2 answers
  • How to correct dimensions of <br><br>capillary rise of liquid in a tube​
    15·1 answer
  • Part 1. Define the following terminologies
    9·1 answer
  • What type of reaction is below?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!