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
Hunter-Best [27]
3 years ago
15

When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is?

Physics
1 answer:
alekssr [168]3 years ago
3 0
Current = Power/Voltage = 60/120 = 0.5 amperes
You might be interested in
Which of these may be damaged by increase in solar activity
Gemiola [76]
<span>There's nothing on that list that may be damaged by increase in solar activity. </span>
6 0
3 years ago
a) Calculate the magnitude of displacement of the car in 40 seconds. b) During which part of the journey was the car acceleratin
Zielflug [23.3K]

Answer:

a)  600 meters

b) between 0 and 10 seconds, and between 30 and 40 seconds.

c) the average of the magnitude of the velocity function is 15 m/s

Explanation:

a) In order to find the magnitude of the car's displacement in 40 seconds,we need to find the area under the curve (integral of the depicted velocity function) between 0 and 40 seconds. Since the area is that of a trapezoid, we can calculate it directly from geometry:

Area \,\,Trapezoid=(\left[B+b]\,(H/2)\\displacement= \left[(40-0)+(30-10)\right] \,(20/2)=600\,\,m

b) The car is accelerating when the velocity is changing, so we see that the velocity is changing (increasing) between 0 and 10 seconds, and we also see the velocity decreasing between 30 and 40 seconds.

Notice that between 10 and 30 seconds the velocity is constant (doesn't change)  of magnitude 20 m/s, so in this section of the trip there is NO acceleration.

c) To calculate the average of a function that is changing over time, we do it through calculus, using the formula for average of a function:

Average\,of\,f(x)=\frac{1}{b-a} \int\limits^b_a {f(x)} \, dx

Notice that the limits of integration for our case are 0 and 40 seconds, and that we have already calculated the area under the velocity function (the integral) in step a), so the average velocity becomes:

Avearage=\frac{600\,\,m}{40\,\,s}= 15\,\,\frac{m}s}

7 0
3 years ago
Question about generators and electrical currents. Please, no absurd answers! Thank you
Kamila [148]
The first answer should be correct if not then the second one
3 0
3 years ago
Read 2 more answers
A model shows a machine that works using electrical fields. What would this machine need for the electrical field to function pr
Alex

at least two charged interacting parts

7 0
3 years ago
A piece of steel expands 10 cm when ur is heated from 20 to 50 degrees Celsius. How much would it expand if it was heated from 2
faltersainse [42]

The steel would expand by 4. 8 * 10^-3 cm

<h3>How to determine the linear expansion</h3>

The change in length  ΔL is proportional to length  L. It is dependent on the temperature, substance, and length.

Using the formula:

ΔL= α LΔT

where  ΔL  is the change in length  L = 10cm

ΔT  is the change in temperature = 60° - 20° = 40° C

 α  is the coefficient of linear expansion = 1.2 x 10^-5 °C

Substitute into the formula

ΔL = 1.2 * 10^-5 * 10 * 40

ΔL = 4.8 * 10 ^-3 cm

Therefore, the steel would expand by 4. 8 * 10^-3 cm

Learn more about linear expansion here:

brainly.com/question/14325928

#SPJ1

8 0
2 years ago
Other questions:
  • Sics and Chemistry A (2nd Six Weeks) - SC3200SFA/01
    14·1 answer
  • Two billion people jump up in the air at the same time with an average velocity of 7.0 m/sec. If the mass of
    10·2 answers
  • If you found some sandstone in an ancient river bed, which of these conditions at the time that the sandstone was formed would b
    13·1 answer
  • A 4.0 kg block is initially at rest on a frictionless, horizontal surface. The block is moved 8.0 m by the application of a cons
    8·1 answer
  • When an 8 V battery is connected to a resistor, a 2 A current flows in the resistor. What is the resistor's value?
    15·1 answer
  • 1. The nearest distance of distinct vision of
    13·1 answer
  • A mover slides a refrigerator weighing 650 N at a constant velocity across the floor a distance of 8.1 m. The force of friction
    12·1 answer
  • Write the types of lever with 5.5 example​
    6·1 answer
  • Using Newton's third law of motion, write a scientific explanation that describes why
    13·1 answer
  • If the magnetic flux through a loop increases according to the relation; where , is in milliweber (mWb) and t is in seconds. Cal
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!