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Answer:
0.5
Explanation:
From the question given above, the following data were obtained:
Force (F) = 50 N
Weight (W) = 100 N
Coefficient of static friction (μ) =.?
The coefficients of static friction (μ) is simply defined as the ratio of force (F) to the normal reaction (N). Mathematically, it can be expressed as:
μ = F / N
With the above formula, we can obtain the coefficient of static friction as follow:
Force (F) = 50 N
Weight (W) = 100 N
Coefficient of static friction (μ) =.?
μ = F / W
μ = 50 / 100
μ = 0.5
Thus, coefficient of static friction is 0.5
Answer:can a moving car be a frame of reference?
Therefore, a frame of reference can be in motion, and that motion can be of several different types. Anyone who has ever taken a ride in a car has been in a moving frame of reference and has experienced the several different types of motion through which this frame can move.
Explanation:
Explanation:
The 38 elements in groups 3 through 12 of the periodic table are called "transition metals." As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat.
Answer:
The thorium-232 is 1.45 billion years old.
Explanation:
Given:
Let original mass of thorium-232 be 
.
Half life for the decay process is, 
Mass of thorium-232 left after some time (m) = 
Let the rate of decay be 'r' and time taken be 't' billion years.
We know that, the amount of radioactive element left after 't' years is given by the formula:
Also, the rate of decay is given by the formula:
Now, plug in all the given values and solve for 't'. This gives,
Therefore, the thorium-232 is 1.45 billion years old.
