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
kogti [31]
2 years ago
8

A psychologist studies if internet uses causes isolation

Physics
1 answer:
Degger [83]2 years ago
4 0
A) experimental because he isn’t sure and is testing out
You might be interested in
With a bar magnet where are the lines of force closest together
attashe74 [19]
At the tip of either of the magnets poles
8 0
2 years ago
Read 2 more answers
Write and solve a MA or efficiency problem
GuDViN [60]
Input energy is: 200 joule
Output energy is: 100 joule

100/200*100=%50 efficiency
8 0
2 years ago
As the water molecules heat up they become more dense and float to the top. True or False
miss Akunina [59]

Answer: False but read why

Heated water molecules expands ( become less dense) but they do float to the top.

8 0
3 years ago
Formulating a Hypothesis: Part I Since the investigative question has two variables, you need to focus on each one separately. T
Westkost [7]

Answer : The kinetic energy depends directly on the mass of a particle.

Explanation :

We know that the kinetic energy of any particle is given by :

KE=\dfrac{1}{2}mv^2

Where,

m is the mass of an object.

v is the velocity with which it is moving

Kinetic energy is due to the motion of the particle.

So, the kinetic energy of a particle is directly proportional to its mass.

Hence, the conclusion of the question is if the mass of a particle is increases then its kinetic energy also increase.

3 0
3 years ago
Read 2 more answers
Q.Solve the following circuit find total resistance RT. Also find value of voltage across resister RC.
vagabundo [1.1K]

Answer:

R_total = 14.57 Ω ,  V_C = 1.176 V

Explanation:

To solve this circuit we are going to find the equivalent resistance of each branch, let's remember

* Serial resistance  

         R_{eq} = ∑ R_{i}

* For resistance in parallel

        1 / R_{eq} = ∑ 1/R_{i}

We solve the two branches of the wheatstone bridge

Series resistors

Branch B

         R_B = Rb + R4

         R_B = 2 + 18

         R_B = 20 Ω

Branch C

         R_C5 = Rc + R5

         R_C5 = 3 + 12

         R_C5 = 15 Ω

Resistance in parallel R_B and R_C5

         1 / R_BC = 1 / R_B + 1 / R_C5

          1 / R_BC = 1/20 + 1/15 = 0.116666

          R_BC = 8.57 Ω

Now we have a single branch, we solve the series resistance

          R_total = R_A + R_BC

          R_total = 6 + 8.57

          R_total = 14.57 Ω

b) they ask us for the voltage in the resistance R_C

Let's remember that the voltage in a series circuit is the sum of the voltages

           10 = V_a + V_BC

           10 = i R_a + i R_BC = i (R_a + R_BC)

           i = 10 / (R_a + R_BC)

           i = 10 / (14.57)

           i = 0.6863 A

The current in the series circuit is constant

          V_BC = i R_BC

          V_BC = 0.6863 8.57

          V_BC = 5.8819 V

This voltage is divided in the bridge, for the two branches in parallel it is the same, but the resistance is different in each branch.

     Branch C

             V_BC = i R_C5

             i = V_BC / R_C5

             i = 5.8819 / 15

             i = 0.39213 A

In this branch we have two resistors in series, let's remember that the current in a series circuit is constant

             V_C = i R_C

              V_C = 0.39213 3

              V_C = 1.176 V

3 0
3 years ago
Other questions:
  • The density of blood is 1.05 kg/m3, find the mass of a bag of blood for a transfusion, if the volume is 1.5 m3.
    13·2 answers
  • What is the thermal efficiency a carnot engine operating between the highest and lowest temperatures reached by this engine?
    6·1 answer
  • benzene c6h6 and toluene c6h5ch3 for ideal solutions. at 35c the vapor pressure of benzene is 160 torr and that of toluene is 50
    10·1 answer
  • The surface tension of a liquid is to be measured using a liquid film suspended on a U-shaped wire frame with an 12-cm-long mova
    6·1 answer
  • 5)List an appropriate SI base unit (with a prefix as needed ) for the following:
    13·2 answers
  • If a CD player uses a 12-V battery and draws 2.0 amps of current, how much power does it use?
    5·1 answer
  • A car moves with an average speed of 45 miles/hour. How long will it take the car to travel 90 miles?
    6·1 answer
  • An elevator filled with passengers has a mass of 1663 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 f
    9·1 answer
  • I need Help ASAP I will give you brainlest and plus 5 stars ✨✨and plus thanks and 50 points EVeryONe need help this is due today
    6·1 answer
  • Explain why mercury is rarely used in modern thermometers
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!