Answer:
The answer is A
Explanation:
Argon is the stable element that is used to determine the age of volcanic rock as it is found inside of it.
I dont know if the top is correct but the answer is because i just took the test.
Answer:
u = 7.74 m/s and t = 1.82 s
Explanation:
Given that,
Harold threw a baseball 3 meters.
Harold is 2 meters tall.
The vertical distance = 3m
The final velocity at the maximum height is 0.
Let u is the initial velocity of the baseball. Using the first equation of motion to find it as follows :
Here, a = -g
He has thrown it with the speed of 7.74 m/s
Let t is the time taken by the ball to fall on the ground.
Harold is 2 meters tall. Using second equation of motion to find it.
u = -7.74 (as downward direction is taken as positive)
Hence, this is the required solution.
Answer:
Moment of Force, M = 51.6 lbf-ft
Explanation:
Given,
The fishing rod AB of length, L = 6 ft
The force acting on the rod, F = 8.6 lbf
The moment of force about A is given as the product of force and perpendicular distance. It is given by the formula
M = F x L
Substituting the given values in the above equation
M = 8.6 lbf x 6 ft
= 51.6 lbf-ft
The moment about A of the force exerted by the line at B is, M = 51.6 lbf-ft
Answer:
how close to the true value a measurement is
Answer:
The third choice:
Explanation:
The cork is positively charged, therefore we know tat there must be excess of positively charged protons present.
The charge of a proton is
;
therefore, the number that makes up a charge of is
which is the 3rd choice.