Answer:
m1 = √2kg , m2 = 1kg , m3 = 1kg
Explanation:
Since the mass m1 can't move, the sum of horizontal and vertical forces must be zero. Since the mass m1 is suspended symmetrically the horizontal forces are equal if mass m2 and m3 are equal.
The tension in each string suspending mass m1 must match the force of gravity pulling on m1. The tension in each string is:
T = m2*g = m3*g = g
The vertical forces pulling m1 up is therefore: 2 * T * cos 45° = √2 * T = √2 * g
This force must match the force of gravity G pulling m1 down. G = m1 * g
Combining both equations: √2 * g = m1 * g
m1 = √2
Answer:
The distance the car traveled during the given time is 94.44 m.
Explanation:
Given;
time of motion t = 8 seconds
initial velocity, u = 15 km/hr = 4.167 m/s
final velocity, v = 70 km/hr = 19.444 m/s
The distance traveled by the car during this time is given by;
Therefore, the distance the car traveled during the given time is 94.44 m.
velocity and wavelength are likely to change in the process
- When a wave travels from one medium to another it undergoes a change in direction and this is referred to as refraction.
- Refraction is the bending of a wave or a change in direction of a wave as it travels from one medium to another. Refraction is accompanied by change in velocity and wavelength of a wave
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it is a surface layered infection that is commonly found on soft tissue or within the nasal cavity.
Answer:
Velocity of throwing = 34.335 m/s
Explanation:
Time taken by the tennis ball to reach maximum height, t = 0.5 x 7 = 3.5 seconds.
Let the initial velocity be u, we have acceleration due to gravity, a = -9.81 m/s² and final velocity = 0 m/s
Equation of motion result we have v = u + at
Substituting
0 = u - 9.81 x 3.5
u = 34.335 m/s
Velocity of throwing = 34.335 m/s