Answer:
Hydrogen oxygen nitrogen and carbon
Explanation:
Answer:
Increasing the number of trials reduces the impact of any one imprecise measurement. … To increase the number of attempts, you can find an average result for the experiment, as well as find and discrepancies as human error if you perform an experiment several times.
Explanation:
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Answer:
(a) Ratio of mean density is 0.735
(b) Value of g on mars 0.920
(c) Escape velocity on earth is
Explanation:
We have given radius of mars and radius of earth
Mass of earth
So mass of mars
Volume of mars
So density of mars
Volume of earth
So density of earth
(A) So the ratio of mean density
(B) Value of g on mars
g is given by
(c) Escape velocity is given by
Answer:
F1= 122.93 N
Explanation:
Pascal´s Principle
Pascal´s Principle can be applied in the hydraulic press:
If we apply a small force (F1) on a small area piston A1, then, a pressure (P) is generated that is transmitted equally to all the particles of the liquid until it reaches a larger area piston and therefore a force (F2) can be exerted that is proportional to the area (A2) of the piston:
P=F/A
P1=P2
Formula (1)
Data
D1 = 1.85 cm : primary cylinder piston diameter
D2 = 24.5 cm : secondary cylinder piston diameter
m = 2200-kg : car mass
Piston area calculation
A1= 2.688 cm²
A2 = 471.435 cm²
Calculating of the weight of the car (W)
W = m*g = 2200-kg * 9.8 m/s² = 21560 N
Calculation of the force in Newtons to be exerted on the primary cylinder piston
Data:
A1= 2.688cm²
A2= 471.435 cm²
F2 = W= 21560 N
We replace data in the formula (1)
F1= 122.93 N
Answer:
Explanation:
Resistance of wire, R = 48 ohm
It is cut into four pieces.
As we know that the resistance is directly proportional to the length of the wire.
So, the resistance of each piece of wire, R' = 48 / 4 = 12 ohm
Now the four pieces are connected in parallel. So the equivalent resistance is given by
Req = 3 ohm