Potential energy behind dams
        
                    
             
        
        
        
Nah gaya seperti titik fashion seperti apa yang Anda mana dan hal-hal seperti itu. (tell me if you cant understand)
        
                    
             
        
        
        
Answer:
b) d = 0.71 Km
Explanation:
Car kinematics
Car 1 moves with uniformly accelerated movement
 Formula (1)
 Formula (1)
d: displacement in meters (m)
v₀: initial speed in m/s
vf: final speed in m/s
a: acceleration in m/s²
Equivalences:
1mile = 1609.34 meters
1 hour = 3600s
1km = 1000m
Known data


a = -0.5 m/s²
Distance calculation
We replace data in the Formula (1)




 
        
             
        
        
        
Answer:
22.02 m
Explanation:
given,
Force, F = 107 N
angle made with horizontal = 13.5◦
Power develop by the lawn roller = 69.4 W
time = 33 s
distance = ?
Force along horizontal= F cos θ
           = 107 cos 13.5°= 104 N 
Power = 
69.4 = 
W = 2290.2 J
Work done= Force x displacement
displacement= 
                       = 22.02 m
 
        
             
        
        
        
(5 bulbs) x (25 watt/bulb) x (6 hour/day) x (30 day/month) =
             (5 x 25 x 6 x 30) watt-hour/month = 
                 22,500 watt-hour/month .
The most common unit of electrical energy used for billing purposes 
is the 'kilowatt-hour' = 1,000 watt-hours .
               22,500 watt-hour/month =  <em>22.5 kWh/month</em>.
             (22.5 kWh/month) x (1.50 Rs/kWh) =  <em>33.75 Rs / month
</em>