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
vazorg [7]
3 years ago
11

5. Consider two glasses, one filled with water and the other half-full, with the water in the two glasses being at the same temp

erature. In which glass are the water molecules moving faster? In which is there greater internal energy? In which will more heat be required to increase the temperature by 1 degree C?
Physics
1 answer:
ratelena [41]3 years ago
6 0

Answer:

Explanation:

In the glass full of water, volume and therefore mass of water is more than that in  glass, half filled with water. Temperature of water is same . The velocity of molecules depend on the temperature of the material. Since temperature of water is same in both the glasses, the velocity of water molecules will be same in both the glasses.

. The internal energy per unit volume or mass  too is dependent on the temperature . Since the volume of water is more in the fully filled glass , internal energy too will be more of this glass.

Heat required to increase unit degree temperature of unit mass of any thing is called specific heat . In case of water one calorie of heat is required to increase temperature by  one degree C in mass of  one gram of water .Since,  gram of water is more in case of fully filled glass , more heat will be required to increase the temperature by one  degree C of water in fully filled glass.

You might be interested in
Which tools would be necessary to determine whether or not a large block will float, without using water?
iren2701 [21]

Answer:

The answer is A Ruler and Balance

Explanation:

6 0
3 years ago
Write an expression for a harmonic wave with an amplitude of 0.19 m, a wavelength of 2.6 m, and a period of 1.2 s. The wave is t
zlopas [31]

Answer:

y = 0.19 sin(5.23 t - 2.42x + \frac{\pi}{2})

Explanation:

As we know that the wave equation is given as

y = A sin(\omega t - k x + \phi_0)

now we have

A = 0.19 m

\lambda = 2.6 m

so we have

k = \frac{2\pi}{\lambda}

k = \frac{2\pi}{2.6}

k = 2.42  per m

also we have

T = 1.2 s

so we have

\omega = \frac{2\pi}{T}

\omega = \frac{2\pi}{1.2}

\omega = 5.23 rad/s

now we know that at t = 0 and x = 0 wave is at y = 0.19 m

so we have

\phi_0 = \frac{\pi}{2}

so we have

y = 0.19 sin(5.23 t - 2.42x + \frac{\pi}{2})

6 0
3 years ago
Many pigeons live near Martyn’s air conditioning vents. Martyn isn’t able to clean the vents properly, and they often contain dr
Furkat [3]

Answer:

B) Aerosol

The particles from the pigeon droppings are likely to be transmitted from the air vents directly into Martyn's respiratory system

3 0
3 years ago
A flying stationary kite is acted on by a force of 9.8 N downward. The wind exerts a force of 45 N at an angle of 50.0 degrees a
Savatey [412]

Answer:

38 N, 40.0° below the horizontal

Explanation:

Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration.

7 0
3 years ago
Jeff of the Jungle swings on a 7.6-m vine that initially makes an angle of 32 ∘ with the vertical.
shtirl [24]

To solve this problem we will use the trigonometric concepts to find the distance h, which will allow us to find the speed of Jeff and that will finally be the variable that will indicate the total tension, since it is the variable of the centrifugal Force given in the vine at the lowest poing of the swing.

From the image:

cos (32) = \frac{(7.6-h)}{7.6}

h = 1.1548m

When Jeff reaches his lowest point his potential energy is converted to kinetic energy

PE = KE

mgh = \frac{1}{2} mv^2

v = \sqrt{2gh}

v = \sqrt{2(9.8)(1.1548)}

v= 4.75m/s

Tension in the string at the lowest point is sum of weight of Jeff and the his centripetal force

T = W+F_c

T = mg + \frac{mv^2}{r}

T = (83)(9.8)+\frac{(9.8)( 4.75)^2}{7.6}

T = 842.49N

Therefore the tension in the vine at the lowest point of the swing is 842.49N

3 0
3 years ago
Other questions:
  • Look at the graph.<br><br><br><br><br><br> If the price of peaches increases, what can be expected?
    6·2 answers
  • Structures on a bird feather act like a diffraction grating having 7000 7000 lines per centimeter. What is the angle of the firs
    8·1 answer
  • A car starts from rest and travels for t1 seconds with a uniform acceleration a1. The driver then applies the brakes, causing a
    11·1 answer
  • 1. Stephanie Schneider is running down the street at 10 m/s. She sees a double-tall latte on
    8·2 answers
  • The greatest height reported for a jump into an airbag is 99.4 m by stuntman Dan Koko. In 1948 he jumped from rest from the top
    13·1 answer
  • Question 4
    12·1 answer
  • a ball is rolled uphill a distance of 3 meters before it slows,stops,and begins to roll back. the ball rolls downhill 6 meters b
    13·1 answer
  • Is bacteria used in photosynthesis
    14·1 answer
  • What are the effects of radiation on different surfaces such as an ice- covered lake, a forest, an ocean, or an asphalt road?
    10·2 answers
  • 1. Which of the following is true about sound waves?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!