Answer:
Body weighs lesser in water because of the upward force (buoyant force) which acts on our body thereby reducing our actual weight. This is our apparent weight.
Explanation:
hope it helps 
 
        
             
        
        
        
A red light means to stop. If you are turning from a two-way road or onto a two-way road, then you are NOT allowed to reverse your car If you can't do it 
Red is typically used to indicate danger or warning, and on traffic lights, it indicates a potential hazard ahead and, as a result, serves as a signal for drivers to stop. If the traffic light turns red while you are already at a junction, you must move swiftly to the opposite side to avoid a potential accident with oncoming traffic.
 If the traffic light has turned red as you approach the junction and you are just entering it, you must stop. Unless there is a sign clearly telling you not to turn left at the red light, you may do so. Give way to people and cars coming from other directions when turning.
To learn more about Traffic lights please visit -
brainly.com/question/14871009
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Answer:
(a) Friction force = 50 N
(b) Work done by friction = 300 j 
(c) Net work done = 0 j
Explanation:
We have given that the box is pulled by 6 meter so d = 6 m
Force applied on the box F = 60 N 
We have have given that velocity is constant so acceleration will be zero 
So to applied force will be utilized in balancing the friction force 
So friction force 
Work done by friction force 
Work done by applied force 
So net work done = 300-300 = 0 j 
 
        
             
        
        
        
Answer:
Frequency
Explanation:
Photons are the packet of energy. They are massless and chargeless particles. They travel in the vacuum with the speed of light. The energy of photon is given by :

Where
h = Planck's constant
 = frequency of photon
 = frequency of photon
Or 
c = speed of light
 = wavelength of photon
 = wavelength of photon
From the above equation, it is clear that the energy of photon is directly proportional to its frequency.
 
        
             
        
        
        
A believe that’s called a reference point.