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
Elenna [48]
4 years ago
6

Electromagnets can be used to lock doors. How could an engineer increase the strength of an electromagnetic lock? Check all that

apply
A. by increasing the current through the wire

B. by reversing the current through the electromagnet

C. by adding more coils to the electromagnet

D. by increasing the space between the coils in the electromagnet
Physics
1 answer:
ddd [48]4 years ago
3 0

The answer should be A

You might be interested in
Using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before h
ASHA 777 [7]
If it starts from 0m/s...
s=?
u=0
a=-10
t=8
s=ut +1/2at^2
so s=(0×8)+ (0.5×-10×64)
s=0+(32×-10)
s=32×-10
s=-320metres
6 0
3 years ago
How far will you travel if you run for 10. minutes at 2.0 m/s?
oee [108]
We know that 1 minute= 60 seconds (or 1 min= 60 s).

10 min* (60 s/ 1 min)* (2.0 m/ 1 s)= 1,200 m.
(Note that the units cancel out so you get the answer)

The final answer is 1,200 m.

Hope this helps~
6 0
3 years ago
H o m o zygous what does it mean
lord [1]

Answer:

two identical

Explanation:

6 0
3 years ago
If a car is traveling at an average speed of 60 kilometers per hour how long does it take to travel 12 kilometers
lara31 [8.8K]

Answer:

The time taken to travel is, t = 12 minutes

Explanation:

Given data,

The speed of the car, v = 60 km/h

The distance of travel, d = 12 km

The time taken for the travel is t = ?

The speed is defined as the distance divided by the time taken to travel. The formula for speed is,

                                  v = d/t

∴                                  t = d/v

                                    t = 12 km / 60 km/h

                                    t = 0.2 h

                                     t = 12 minutes

Hence, the time taken to travel is, t = 12 minutes.

5 0
3 years ago
An alternating current is supplied to an electronic component with a warning that the voltage across it should never exceed 13 V
MrMuchimi

Answer:

9.2 V

Explanation:

The RMS value of an AC is the effective value of a varying voltage or current in DC, that is the equivalent value of the AC which produces the same effect as an DC. For example if a motor is supplied by a 9V RMS voltage, it will rotate as if the voltage applied was 9V DC.

The RMS value is given by:

RMS voltage = Peak voltage * 1/√2

Given that the maximum voltage should not exceed 13 V, this means that the peak voltage is 13 V. The maximum RMS voltage is:

RMS voltage = Peak voltage * 1/√2 = 13 * 1/√2 = 9.2 V

4 0
3 years ago
Other questions:
  • Consider a point located equidistant from point charges A and B, labeled C in the diagram. If A and B have the same magnitude ch
    10·1 answer
  • Calculate the de Broglie wavelength of an electron traveling at 2.0 x 10^8 m/s (me = 9.1*10^-31 kg).
    10·1 answer
  • Is it possible for an object that has a constant negative acceleration to change the direction in which it is moving? Explain wh
    10·1 answer
  • *PLEASE HURRY ITS FOR A QUIZ*
    14·1 answer
  • Sound is an example of ?
    14·2 answers
  • Which one of the following terms is used to describe the bending of waves and subsequent spreading around obstacles or the edges
    8·1 answer
  • A dragster runs the quarter mile in 8.96 s. What is the car's velocity (in ft/s) at the finish line?
    13·1 answer
  • What is the approximate initial height of the counterweight?
    11·1 answer
  • Some steps in mitosis are shown below in the incorrect order:
    7·2 answers
  • What happens to centripetal acceleration as the radius of curvature decreases and the speed is constant, and why
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!