Answer:
They are:
1. Height of liquid
2. Density of liquid
3. Acceleration due to gravity
Answer:
The potential energy can be given as
E = mgh. m is mass, g = acceleration due to gravity = 9.8m/s, h is the heigh, given as 100.0m
E = m x 9.8 x 100 = (980m)J
E = (980m)/10^9GJ = (0.000000980m)GJ to 3 significant figures
Explanation:
Hydroelectric dams exploit storage of gravitational potential energy. A mass, m, raised a height, h against gravity, g = 9.8 m/s², is given a potential energy E = mgh. The result will be in Joules if the input is expressed in meters, kilograms, and seconds (MKS, or SI units).
The following statements are correct:
1. Graduated cylinder are used to measure volume.
2. Always read a graduated cylinder from the bottom of the meniscus.
Graduated cylinders are one of the instruments used to measure liquid substances in the laboratory. The most accurate way of reading measuring cylinder is to record the value at the bottom of the meniscus.
Answer:
Northeast
Explanation:
For a person standing on a top high mid-pacific island on the 15° north latitude, the wind is expected to come from the northeast.
This is because of the Coriolis's effect. According to the Coriolis's effect the the objects moving in the northern hemisphere, tends to veer of their course to the clockwise direction. While moving clockwise from the north the east is witnessed. Thus, the wind is expected from the north east
Answer:
After 11.62 sec car will axceed the speed limit
Explanation:
We have given constant acceleration
As the car starts from rest so its initial velocity u = 0 m/sec
Final velocity v = 65 miles/hr
We know that 1 mile = 1609 meters
And 1 hour = 3600 sec
So
From first equation of motion v = u+at
So
t = 11.62 sec
So after 11.62 sec car will axceed the speed limit