Answer:
The universe began, scientists believe, with every speck of its energy jammed into a very tiny point. This extremely dense point exploded with unimaginable force, creating matter and propelling it outward to make the billions of galaxies of our vast universe. Astrophysicists dubbed this titanic explosion the Big Bang.
Answer:
The coefficient of static friction between the 10kg block and the surface is 0.29. Which was calculated by applying newtons first law of motion as it applies to equilibrium situations.
Explanation:
The steps for the solution to this problem can be found in the attachment below. The first thing to do in problems like this is to draw free body diagrams that clearly shows the forces acting of the elements of the system. Next, you apply newtons law(s) of motion as the case may be and then solve for your unknowns. It is easier to resolve the forces acting at a point into their horizontal and vertical components. This makes the solution to the problem easier.
For this solution, the sign convention used assumed towards as positive, downwards as negative, the right as positive and the left as negative. Best wishes.
Answer:
The approximatel velocity of the proton after the time interval t = 3.3 × 10^-14s is Vp = (3883, 1300, 0)m/s. This result was gotten on the assumption that the force of the HCl molecule on the proton was constant during the given time interval. This allows us to apply Newton's second law of motion easily which is stated mathematically as
F = ma = m(v - u)/t
Using that formula and rearranging gives the formula for v which the required variable.
Explanation:
Full solution can be found in the attachment below.
Thank you for reading.
Answer: B. changing muscle length
Explanation:
Isometric exercise is a kind of exercise which provides strength to the body. In this exercise the muscle length and angle of the muscle do not change during the process of contraction of muscles during exercise. Several calories can be burned if the exercise is done with conscious efforts. The isometric exercise is performed in static positions, dynamic range of motions does not occur.
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➷ The correct answer is A. Shrinking
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