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stealth61 [152]
3 years ago
12

How radio wave carry information?​

Physics
1 answer:
Allisa [31]3 years ago
5 0

Answer:

At the sending end, the information to be sent, in the form of a time-varying electrical signal, is applied to a radio transmitter. ... The radio waves carry the information to the receiver location.

Explanation:

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A car with a mass of 800 g and velocity of 15 m/s collided with a truck of a velocity of 20 m/s, if the momentum is conserved wh
nydimaria [60]

Question: A car with a mass of 800 g and velocity of 15 m/s collided with a truck moving in opposite direction with a velocity of 20 m/s, if the momentum is conserved and they both move with a common velocity of 10 m/s, what is the mass of the truck?

Answer:

0.133 kg

Explanation:

Applying the law of conservation of momentum,

Total momentum before collision = Total momentum after collision

mu+m'u' = V(m+m')................... Equation 1

Where m = mass of the car, m' = mass of the truck, u = initial velocity of the car, u' = initial velocity of the truck, V = common velocity.

From the question,

Given: m = 800 g = 0.8 kg, u = 15 m/s, u' = -20 m/s, V = 10 m/s

Substitute these values into equation 2

(0.8*15)+(m'*20) = 10(0.8+m')

Solve for m'

12-20m' = 8+10m'

-20m'-10m' = 8-12

-30m' = -4

m' = -4/-30

m' = 0.133 kg

4 0
3 years ago
A car traveled 1,215 km West from El Paso to Dallas in 13.5 hours. What was its velocity?
joja [24]

Answer:

D. 90km/hr due West

Explanation:

Given parameters:

Displacement  = 1215km

Time  = 13.5hr

Unknown:

Velocity  = ?

Solution:

Velocity is the displacement divided by the time taken;

   Velocity  = \frac{displacement}{time}   = \frac{1215km}{13.5hr}   = 90km/hr

Velocity is 90km/hr due West

7 0
3 years ago
What does a fern ultimately depend on as an energy source?
Anna35 [415]
It depends on Sunlight. 
6 0
3 years ago
7. Calculate the force applied on an object if the Pressure exerted is 90 Pascal over an area of 900 cm2.
Tanya [424]

Answer:

Explanation: pressure = force / area

Rearrange to get: force = pressure x area. 900 cm2 = 0.09 m2

force = 90 x 0.09

= 8.1 N

6 0
3 years ago
a 1.05 kg water bottle is sitting on the teacher's desk it is .20 m tall and has a radius of .03 m find the force that the water
arsen [322]
The force applied would be 1.05*9.8 = 10.3 N
the pressure is equal to F/a
area will be πr^2 = 0.002826
thus pressure will be = 10.3/0.002826= 3644.72 N/m^2
4 0
3 years ago
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