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murzikaleks [220]
3 years ago
9

How do electric and magnetic fields interact in an electromagnetic wave?

Physics
1 answer:
kotegsom [21]3 years ago
8 0

Answer:

Electric and magnetic field waves are oriented at 90 degree angles relative to each other.

Explanation:

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How much energy will it take to increase the temperature of 200 milliliters if water by 12 degrees Celsius?
AleksandrR [38]

Answer: The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C. Lead will warm up and cool down fastest because it doesn't take much energy to change its temperature.

Explanation:

7 0
4 years ago
You are determining the mass of an object using a triple beam balance. When the pointer is lined up with the zero mark, the ride
astra-53 [7]
We add the values on each of the riders:
300 + 20 + 8
= 328 grams
3 0
3 years ago
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(1 point) A street light is at the top of a 25 ft pole. A 4 ft tall girl walks along a straight path away from the pole with a s
Andreas93 [3]

Answer:

\frac{dx}{dt}=7.14m/s

Explanation:

As is showed at the figure annexed, we can solve this problem finding the relation between the girl displacement and the shadow displacement.

Relation the triangles (see figure annexed):

\frac{x}{H}=\frac{x-y}{h}\\x=\frac{H}{H-h}y

We derive in order to find the speed of the shadow, because:

dx/dt: shadow's speed

dy/dt: girl's speed

\frac{dx}{dt} =\frac{25}{25-4}*6=7.14m/s

5 0
3 years ago
A particle is projected at an angle 60 degrees to the horizontal with a speed of 20m/s. (i) calculate total time of flight of th
Kisachek [45]

Answer:

Time of flight=3.5 seconds

Speed at maximum height is 0

Explanation:

Φ=60°

initial velocity=u=20m/s

Acceleration due to gravity=g=9.8 m/s^2

Total time of flight=T

Final speed=v

question 1:

T=(2 x u x sinΦ)/g

T=(2 x 20 x sin60)/9.8

T=(2 x 20 x 0.8660)/9.8

T=34.64/9.8

T=3.5 seconds

Question 2

Speed at maximum height is 0

8 0
3 years ago
When is the only time that an object has no gravitational potential energy
Rom4ik [11]
When it is not moving or on the ground
5 0
3 years ago
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