PHYSICS HIGH SCHOOL

What symbol is used to represent internal energy in the first law of thermodynamics?A. Q
B. W
C. U
D. V

Answers

Answer 1
Answer:

Answer:

\Delta U = Q - W

aka—^

(ΔU = Q − W)

The symbol for Internal Energy Change isΔU. It is the sum of all the microscopic energies such as: translational kinetic energy. vibrational and rotational kinetic energy.
Answer 2
Answer:

Answer:

C. U

Explanation:

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The Hubble telescope’s orbit is 5.6 × 105 meters above Earth’s surface. The telescope has a mass of 1.1 × 104 kilograms. Earth exerts a gravitational force of 9.1 × 104 Newtons on the telescope. The magnitude of Earth’s gravitational field strength at this location is
Calculate the average speed of a bicycle that travels 100m in 20 s.
How does matter and energy move through the water cycle
At t = 0, a battery is connected to a series arrangement of a resistor and an inductor. At what multiple of the inductive time constant will the energy stored in the inductor's magnetic field be 0.565 its steady-state value?

What is the main difference between primary and secondary succession?A The climax of primary succession is pine forest
B Primary succession begins with bare rocks
C Secondary succession begins with mossed and lichens
D Secondary succession include frequent fires

Answers

Answer:

b

Explanation:

Some organelles are present in both plant and animal cells. Each organelle performs a different function. Which of the functions listed below are performed by organelles found in both plants and animals?

Answers

Organelles that are present in both forms of eukaryotic cells are the following :

Nucleus

Endoplasmic Reticulum

Ribosomal units

Golgi apparatus

Lysosomes

Perixosomes

Mitochondrion

Cytoskeleton/Cytosol

Vacuole

Nucleolus

Plasma membrane

Microtubules/Microfilaments

All celluar functions corresponding to the organelles can be found in both plant and animal cells

The cell is made up of the cell membrane and the cell organelles.

There are two types of cells on the basis of an organism. These are as follows:-

  • Plant cell
  • Animal cell

Plants cells are different from animal cells in the following ways:-

  • Cell wall
  • Ribosome
  • Vacolues
  • Plasmodesmata

These are the organelles that are found in both cells

  • Nucleus
  • Endoplasmic Reticulum
  • Ribosomal units
  • Golgi apparatus
  • Lysosomes
  • Perixosomes
  • Mitochondrion
  • Cytoskeleton/Cytosol
  • Vacuole
  • Nucleolus
  • Plasma membrane
  • Microtubules/Microfilaments

For more information, refer to the link:-

brainly.com/question/5172951

A car passes the Eiffel tower driving at a constant rate of 60 km per hour. A second car, traveling at a constant rate of 75 km per hour, passes the Eiffel tower a while later and then follows the first car. It catches the first car after traveling a distance of 75 km past the Eiffel tower. How many minutes after the first car passed the Eiffel tower did the second car pass the Eiffel tower

Answers

Answer:

300 minutes.

Explanation:

Given,

Speed of car 1 = 60 Km/h

Speed of car 2 = 75 Km/h

distance travel by car 2 to catch car 1 = 75 Km

time taken to catch the car = ?

Relative velocity between the car = 75 - 60 = 15 Km/h

time = (distance)/(speed)

time = (75)/(15)

t = 5 hrs

t = 5 x 60 = 300 minutes.

If you wanted to increase the voltage, which would you use?a. generator
b. step-up transformer
c. step-down transformer
d. motor
e. detector

Answers

The correct answer of the question is :  B) Step-up transformer.

EXPLANATION :

Before coming into any conclusion, first we have to understand the step-up and step-down transformer.

The step-up transformer is the transformer whose transformer ratio is greater than one. It means it will increase the voltage of the source or decrease its current.

On the other hand, the transformer ratio of step-down transformer is less than one. Hence, it will decrease the higher voltage to lower voltage or increase the lower current into higher current of the given source.

As per the question, we want to increase the voltage of the source.

Hence, we have to use step-up transformer.
b) step-up transformer

"A hole is punched in a full milk carton, 10 cm below the top. What is the initial velocity of outflow?"

Answers

Answer:

The initial velocity of outflow is 1.4 m/s.

Explanation:

As a hole is punched in a full milk carton, and we have to calculate the initial velocity of outflow 10 cm below the top. We use the concept of conservation of energy.  

Further Explanation:

Using the conservation of energy, below the top the potential energy converted in kinetic energy

P.E =K.E

mgh=(1)/(2) mv^(2)

As mass of milk does not change at the top and 10 cm below the top, therefore  

v=√(2gh)

Here, v is the initial velocity,  

g is acceleration due to gravity  

h is height.  

Given: h = 10 cm and g = 9.8 m/s2

Substituting the given values, we get

v=√(2×9.8×0.1m)  

v=√(1.96)=1.4 m/s

Lear more:

brainly.com/question/1581227

Key word:  

Conservation of energy, Kinetic energy, potential energy.
P 1 = 101,325 Pa (atmospheric pressure)
Milk has almost same density as water: (Rho)= 1,000 kg /m³ 
P 2 = 101,325 Pa + 1,000 kg/m³ · 9.81 m/s² · 0.1 m = 102,306 Pa
The hydrostatic equation:
P 1 + (Rho)v1² / 2 = P 2 + (Rho)·g·h2
101,325 + 1,000 v1²/2  = 102,306 + 1000 · 9.81 · 0.1
500 v 1² = 102,306 + 981 - 101,325
v 1² = 3.924
v 1 = √ 3.924
v 1 = 1.98 m/s
The initial velocity of outflow is 1.98 m/s.

what organ absorbs excess water from undigested food prior to its release from the body as a solid waste

Answers