Answer:
Explanation:
Given that,
If the mass of a body is 15 kg and produced an 4.2 m/s², we need to find the acceleration if the mass is 10 kg and the same force is applied.
Force is given by :
F = ma
Since force is same
So, if the mass is 10 kg, acceleration is
Light will pass through a pair of Polaroids when the axes are aligned. Because each polaroid can only pass light waves in one direction through it - either horizontal or vertical. If the axes are aligned at right angles to each other, then the horizontal polaroid will not allow the vertical light waves to pass, while the vertical polaroid will not allow the horizontal light waves to pass. Therefore light cannot pass through a pair of polaroids when the axes are at right angles to each other.
Answer:
<h2>0.90cm</h2>
Explanation:
Hooke's law state that, provided the elastic limit of an elastic material is not exceeded, the extension e is directly proportional to the applied force.
given data
mass m= 3.5kg
extension e= 2.10cm to m = 2.1/100=0.021
let us solve for the spring constant k
we know that
F=ke--------Hooke's law
F=ma-------1st law of motion
ma=ke
k=ma/e
Assume a=10m/s^2
k=3.5*10/0.021
k=35/0.021
k=1666.66N/m
(a) If the 3.50-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it
so mass is now= 1.5kg
we found k = 1666.66N/m
ma=ke
e=ma/k
e=1.5*10/1666.66
e=15/1666.66
e=0.009m
in cm =0.90cm
Answer:
185.25 m/s
Explanation:
consider the motion of the combination of bullet and block after the collision
v₀ = initial speed just after the collision
v' = final speed = 0 m/s
μ = Coefficient of friction = 0.6
g = acceleration due to gravity = 9.8 m/s²
a = acceleration of the combination = - μ g = - (0.6) (9.8) = - 5.88 m/s²
d = stopping distance = 13 m
using the kinematics equation
v'² = v₀² + 2 a d
0² = v₀² + 2 (- 5.88) (13)
v₀ = 12.4 m/s
m = mass of the bullet = 9.9 g = 0.0099 kg
M = mass of the wood = 138 g = 0.138 kg
v = speed of bullet before collision
v₀ = speed of combination after the collision = 12.4 m/s
Using conservation of momentum
m v = (m + M) v₀
(0.0099) v = (0.0099 + 0.138) (12.4)
v = 185.25 m/s
The total distance that is traveled is 12 inches.
<h3>
What is the distance?</h3>
We know that distance is a scalar quantity. The term distance only has to do with the difference between two points. The direction is not taken into cognizance when we are discussing the distance that has been covered.
As we have said that distance is a scalar quantity, it the follows that the process of obtaining the total distance can only be algebraic given that we could directly add all the distance covered by the ant in order to obtain the total distance of the ant.
Now, we can see that the ant starts at the 17-inch mark, crawls to the 21-inch mark, then moves to the 8-inch mark. The total distance covered is obtained from; (21 - 17) + 8 = 12 inches.
Learn more about distance:brainly.com/question/15172156
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