What is the kinematic viscosity of Demineralised water?
The kinematic viscosity of demineralized water at 20°C is approximately 1.0 × 10^-6 m^2/s.
Compare and contrast refraction and reflection of wave energy?
Refraction is when light slightly bends because glass or water is in the way. This makes the object look bent or crooked. For example when you put a straw in a glass of water, the straw looks as if it were bent, but it really isn't. Reflection is when the light particles of an object bounce off of another object showing the same image. You can't see your reflection on all objects though.
How many RPMs does a 6 inch wheel spinning at 10 mph have?
A 6 inch wheel spinning at 10 mph would have approximately 786 RPM (Revolutions Per Minute). This calculation is done by converting the speed from mph to inches per minute (10 mph = 880 inches/min) and then dividing by the circumference of the wheel (6*pi = 18.85 inches).
Yes you can.
All you need to know is it's maximum height to find the total time.
We are not concerned with displacement because it's horizontal velocity is constant and there are no horizontal forces.
Let it's maximum height = h
It's vertical velocity at it's highest position = 0
Acceleration due to gravity = g
To find the time it takes the ball to come down from it's highest position can be calculated using the equation, s = ut + (1/2)at2 (Where s= displacement, u= initial velocity, a=acceleration and t=time)
=> h = 0 x t + (1/2)gt2
=> h = (1/2)gt2
=> t2 = 2h/g
=> t = √(2h/g)
The time it takes for the ball to go up is same as it is to come down because the acceleration is same for both the cases, hence the total time the ball remains in air will be 2t = 2 x √(2h/g)
The kinetic energy of a particle is given by 1/2 mv^2, and since the kinetic energy is the same for both particles, we can set their kinetic energies equal to each other. This gives us 1/2 (1.0kg) v1^2 = 1/2 (4.0kg) v2^2. Solving for the ratio gives v2/v1 = 1/2. Since momentum is given by p = mv, the ratio of the momenta is proportional to the ratio of the velocities, which is 1:2.
Is a velocity graph the same thing as an acceleration graph?
Velocity is defined by physicists as both speed and direction, that is to say, if you are moving at 30 feet per second in a northerly direction, that is a velocity. Acceleration means a change in velocity. Physicists consider speeding up, slowing down, or changing direction all to be forms of acceleration; in more everyday usage, acceleration us used to mean speeding up and deceleration means slowing down. So, if your speed increases from 30 feet per second to 40 feet per second, that is acceleration.
The greatest velocity a falling object reaches?
The greatest velocity that a falling object can achieve is termed, terminal velocity. The equation for terminal velocity is equal to the square root of (2mg / (air density * projected area * drag coefficient))
How many mph is13.00 in 100m dash?
I was thinking the same thing but I found a solution:
Basically 1 second= 0.00027778 hours.
13mph- 0.06214(calculation of length of 100m)÷(0.00027778X13(your speed))
This equals=17.21 seconds as your 100m dash time.
It might look complicated but I simplified it.
How is energy conserved within a closed system?
The energy is conserved by the " law of conservation of energy" . It states that energy can be neither created nor be destroyed. Then a question may arise that if there is no change in the amount of energy, then why do people often say that energy should be conserved ...... energy is wasting....... we must prevent it? Energy is a finite resource. The materials we derive energy from (oil, coal, electricty, ect.) can also harm the environment. By conserving energy you help to save parts of the environment. There are many ways to conserve energy. The most obvious is to not waste it. This can easily be done by shurring off lights when you leave a room, or turning off the computer or TV when it is not being directly used. Some other ways would be to recyle (it takes more energy to produce new cans, for example, than to re-use recycled ones) or re-use bottles or bags so that energy doesn't need to go into making new ones and the others aren't wasted.
Why do heavy objects have greater forces when being dropped?
The formula for forces reads "F=m*a"
The acceleration is constant at 9.8 meters/second on earth.
Therefore, in order for the equation to balance, if the mass is increased, the force also increases proportional to the mass.
Is a measure of the average kinetic energy of the particles in an object?
Temperature. Kinetic energy in subatomic particles is due to the vibrations of these particles.
A basketball player can leap upward .5m what is the initial velocity at the start of the leap?
You can answer this question using the following kinematics equation:
v2 = vi2 +2a(x-xi)
where v is the final velocity, vi is the initial velocity, a is the acceleration, x is the final position and xi is the initial position.
The displacement (x-xi) is given as 0.5m, and since the person is jumping upwards, the acceleration (a) is the acceleration due to gravity, or 9.8 m/s2. The acceleration is negative because it is pointing towards the earth, opposite the direction of her jump. The final velocity (v) is 0, since it is being considered at the peak of the jump. Using this information, solve for vi.
v2 = vi2 +2a(x-xi)
0 = vi2 + 2(-9.8)(0.5)
0 = vi2 + (-9.8)
9.8 = vi2
sqrt(9.8) = sqrt(vi2)
3 m/s = vi
If the mass and kinetic energy is given what formula can you use to find velocity?
Kinetic Energy is define as:
Ek = 1/2mv2
where m is the mass, and v is the velocity.
To solve for v, the equation can be rewritten as:
v = sqrt(2[Ek/m])
What is kinetic energy versus square velocity?
Kinetic energy is directly proportional to the square of an object's velocity.
If you graph the object's kinetic energy against the square of its speed, the
graph is a straight line, and the slope of the line is 1/2 of the object's mass.
Whats the top speed of a ktm 300 exc?
The speed of a "300 cc" motor depends on how much weigh the engine is pushing.
Generally, the 300 cc motors on power scooters can go anywhere from 35-50 MPH.
On a small car, about 35 MPH... though if you loaded the engine on a bare-bones go cart, you could get it to go up to 50 MPH or so....
What is the approx terminal velocity of a human in feet per second?
It depends. Surface Friction could vary. If a person was in the traditional parachute jumper freefall, it is slower and would never meet the terminal velocity of an individual falling through the air whereby his body is vertical.
Statistics show
that a human falling through the air can reach up to speeds of 210mph (93metres per second) at the most.
Does a rock by the side of the road have momentum?
Since the Earth is rotating, and moving through space, and the rock is moving along with the Earth, then it does, but relative to the Earth, I'd say that the momentum of the rock (mass * velocity) is essentially zero.
How can kenectic energy in a ball change back to potential energy?
When a ball in motion reaches its maximum height, its kinetic energy has been converted into potential energy. This happens because the ball has gained altitude and therefore stored energy based on its position in the gravitational field. At the peak of its trajectory, the ball has maximum potential energy and minimal kinetic energy before it starts descending again.
How far above the ground is an egg if weights 55grams and its potential energy?
The height of the egg above the ground can be calculated using the formula for gravitational potential energy: PE = mgh, where m is the mass (55 grams), g is the acceleration due to gravity (9.8 m/s^2), and h is the height. Rearranging the formula to find h gives: h = PE / (mg). Substituting the values gives the height as h = 55g * 9.8m/s^2 / 55g = 9.8 m.
Why do large fan blades take LONGER time to stop rotating than shorter blades?
Large fan blades have more mass and therefore more inertia, which allows them to keep rotating for a longer time before friction and air resistance slow them down. On the other hand, shorter blades have less mass and less inertia, causing them to stop rotating more quickly.
The object's kinetic energy can't be determined from the given information.
Kinetic energy = (1/2) (mass) (speed)2
The question gives the object's mass, but we need its speed too.