Answer:
Scientific evidence relies on data, and it is crucial for researchers to ensure that the data they collect is representative of the “true” situation. This means using proved or appropriate ways of collecting and analyzing the data and ensuring the research is conducted ethically and safely.
Answer:
W = 0.562 J
Explanation:
Initial potential energy of two point charges is given as
here we have
now we have
now at final position the distance between two charges is given as
Now final energy is given as
Now the work done to change the position of charge is given as
Kinetic energy is energy of motion. Anything that's moving has it.
Anything that's not moving doesn't have it.
The only thing on this list of choices that's moving is the gymnast
doing a cartwheel. The swimmer, the basketball player, and the
horse are all just sitting or standing there.
Answer:
Average speed will be 30.30 m/sec
Explanation:
We have distance d = 10 km
Time to reach university to home = 20 min
We know that 1 hour = 20 min
So 20 minute
We have to find average speed
We know that distance = speed × time
So
So the average speed will be 30.30 m/sec
<span>(a).the heat trasfer surface area and heat flux on the surface of filament are
Area of Surface= µDL=3.14(0.05cm)(5cm)= 0.785 cm square
qs=Q/Area of surface= 150W/0.785= 191W/cmsq.=1.91x10Âłx10ÂłW/Msq
(b). the heat surface on the surface of heat bulb
Area of surface = 3.14xD²= 3.14(8CM)²= 201.1cm²
qs=Q/Area of surface=150w/201.1cm²=0.75 w/cm²= 7500w/m²
the amount and cost of electrical energy consumed during one period is
Electrical Consumption=QΛt=(0.15 KW)(365X8h/yr)=438 k Wh/yr
Annual cost= 438 kWh/yr)($.08/kWh)= $ 35.04 /yr</span>