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
laiz [17]
3 years ago
9

A 500.0-g chunk of an unknown metal, which has been in boiling water for several minutes, is quickly dropped into an insulating

Styrofoam beaker containing 1.00 kg of water at room temperature (20.0∘C). After waiting and gently stirring for 5.00 minutes, you observe that the water’s temperature has reached a constant value of 20.0∘C.
(a) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal?
(b) Which is more useful for storing thermal energy: this metal or an equal weight of water? Explain.
(c) If the heat absorbed by the Styrofoam actually is not negligible, how would the specific heat you calculated in part (a) be in error? Would it be too large, too small, or still correct? Explain.
Physics
1 answer:
mixas84 [53]3 years ago
6 0

Answer:

electeicity is caused by the movement of. from one atom to the next

You might be interested in
Healthy pregnant women should get at least 150 minutes of moderate-intensity aerobic activity, spread over a 7-day period, each
kirill115 [55]

Healthy pregnant women should get at least 150 minutes of moderate-intensity aerobic activity, spread over a 7-day period, each week - True

<u>Explanation:</u>

Women who are healthy but moderately active must be engaged with aerobic  activities moderately. they should be engaged with this activities at least 2 and a half hours in all 7 days of a week. They must be engaged with this activity during the pregnancy time and also in the period after their delivery.

During the time of pregnancy all women must be healthy and physically active. The ways for maintaining a very good health in the pregnancy time will be guided by the health care providers. Women should be highly active during and after pregnancy time. This helps in having a baby that is also very healthy.

3 0
3 years ago
Which of the following quantities are vectors? Select all that apply. Which of the following quantities are vectors? Select all
andrew11 [14]

Answer:

1980 kg m/s due south

8.2 m/s2 north-west

Explanation:

In order a quantity to be a vector, it should both has a magnitude and direction.

27 J/s --> Only magnitude. (Power)

1980 kg m/s due south --> Both magnitude and direction. (Momentum)

8.2 m/s2 north-west --> Both magnitude and direction. (Acceleration)

3.2 mi straight up --> Direction is not clear. (Position)

2.9 m/s2 --> Only magnitude. (Magnitude of acceleration)

293 K --> Only magnitude. (Temperature)

200 s --> Only magnitude. (Time)

5 0
3 years ago
Mario golpea el balón con el pie para lanzárselo a Tamara que está situada a 18 m de distancia. El ángulo de salida del balón es
Brilliant_brown [7]

Answer:

y = 0.99 m

Explanation:

This is a projectile launching exercise, let's start by finding the components of the initial velocity, using trigonometry

         cos θ = v₀ₓ / v₀

         sin θ = v_{oy} / v₀

         v₀ₓ = vo cos θ

         v_{oy} = I go sin θ

         v₀ₓ = 15 cos 30 = 12.99 m / s

         v_{oy} = 15 sin 30 = 7.5 m / s

Let's find the time it takes to travel x = 18 m

         x = v₀ₓ t

         t = x / v₀ₓ

         t = 18 / 12.99

         t = 1,385 s

at this point it is at a height of

         y = v_{oy} - ½ g t²

         y = 7.5 1.385 - ½ 9.8 1.385²

         y = 0.99 m

therefore the camera must place the foot 99 cm from the ground

7 0
3 years ago
Which of the following experiments could be used to determine the inertial mass of a block? A. Place the block on a rough horizo
valentinak56 [21]

Answer:

D, using a spring scale to exert a force on the block. Measure the acceleration of the block and the applied force

Explanation:

For this you would use the net force equation acceleration=net force * mass however you will want to isolate mass so it would be acceleration/ net force to get mass. Then process of elimination comes to play.

3 0
3 years ago
A shell traveling with speed, v0 , exactly horizontally and due north explodes into two equal mass fragments. It is observed tha
yanalaym [24]

Answer:

yeah

Explanation:

yeah yeah yeah yeah

3 0
3 years ago
Other questions:
  • Divide 330 ml by 4.00
    8·2 answers
  • The heart damaging chemical found in the blood that association with long term depression is
    7·1 answer
  • Angular velocity in the z direction of a flywheel is w(t)=A + Bt2 The numerical values of the constants are A=2.75 and B=1.50. W
    5·1 answer
  • What is the displacement for a person that walks 3.0km north and 8.0 km south
    9·1 answer
  • Which of the following terms refers to the flow of energy heat and work?
    10·1 answer
  • You are out and about in the country and your father sees a rock that he really wants in the yard. Now you must get the very hea
    8·1 answer
  • A stone dropped from the root of a high buliding . A second stone is dropped 1.30 s later How far apart are the stones when the
    12·1 answer
  • Which law best describes contact force
    7·1 answer
  • What is the temperature shown on the thermometer below?
    8·1 answer
  • Un auto si muove lungo una strada rettilinea​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!