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jekas [21]
3 years ago
14

You want to create a device that sends signals to your dog to stop barking. which type of electromagnetic wave would be most use

ful to investigate?
Physics
1 answer:
kati45 [8]3 years ago
6 0
The answer is radio waves. Th other waves can't send signals to a dog. Its just not how they travel.
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Can you help me with my homework please ? Science
geniusboy [140]
The formula for average​ speed is S=D/T

1. S=72m/37s

Divide

S= 1.94

Kira's average speed is 1.94m/s.

2. S=7.5km / 1.5h

S=5

Your average speed is 5km/h

3. S=1260km/3.5h

S=360

The airplanes average speed is 360km/h
7 0
3 years ago
When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated
VladimirAG [237]

Answer:

B it decreases

Explanation:

the movement of a positive test charge in the direction of an electric field would be like a mass falling downward within Earth's gravitational field. Both movements would be like going with nature and would occur without the need of work by an external force. This motion would result in the loss of potential energy

6 0
3 years ago
What is the hottest layer in the Sun's atmosphere?
erica [24]
I believe it is the core
7 0
3 years ago
A 235.0 g metal block absorbs 2.44 × 103 J of heat to raise its temperature by 35 K. What is the specific heat of the metal? Sho
andrew-mc [135]
When an object absorbs an amount of energy equal to Q, its temperature raises by \Delta T following the formula
Q=m C_s \Delta T
where m is the mass of the object and C_s is the specific heat capacity of the material.

In our problem, we have Q=2.44 \cdot 10^3 J, m=235.0 g and \Delta T=35 K, so we can re-arrange the formula and substitute the numbers to find the specific heat capacity of the metal:
C_s =  \frac{Q}{m \Delta T}= \frac{2.44 \cdot 10^3 J}{(235.0 g)(35 K)}=0.297 J g^{-1} K^{-1}
3 0
3 years ago
What direction does an applied force move an object
monitta
The object will move in the direction of the applied force.
4 0
3 years ago
Read 2 more answers
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