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An airplane flies at 200 km/h at 30.0o N of W. The wind blows it at 30 km/h at 45.0o E of N. What is the resultant velocity of the airplane (magnitude and direction)
A wheel with a moment of inertia of 20 kg m2 initially rotates freely with an angular velocity of 10 rad/s. A pad is applied to the outer surface to stop it. If it takes 10 seconds to stop, what is the torque due to friction?
A 120 V ac voltage source is connected across a 2 muF capacitor. Find the current to the capacitor if the frequency of the source is 60 Hz. What is the power loss in the capacitor?
A vector has an x-component of -21.5 units and a y-component of 35.0 units. Find the magnitude and direction of the vector
Now suppose that the boundary occupies the x-y plane (z=0). In medium 1 vector A→ has components A→ = B→ =Ao(x^+z^) and k1=1. In medium 2, k2 =2. Find the components of A→ and B→f in medium 2.
This is a question in optics and an explanation is required please help.How could you make an object that is not readily visible or recognizable show up more clearly as a reflection on the surface of a swimming pool?
1. Do heavier objects fall more slowly than lighter objecets? 2. Why do objects float in liquids denser than themselves? 3. A particle is moving around in a circle and its position is given in polar coordinates asx=Rcosθ, andy=Rsinθ, whereRis the r..
if an object is near the surface of the earth the variation of its weight with distance from the center of the earth
When a 3.15-kg fan, having blades 16.5 cm long, is turned off, its angular speed decreases uniformly from 12.0 rad/s to 4.30 rad/s in 6.00 s. how long after it is turned off does it take the fan to stop
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff. What is the final VERTICAL velocity
Assuming that each nucleus is roughly spherical and that its mass is roughly equal toA (in atomic mass unitsu), what is the density?
What is the speed of the combined blocks after the collision? What angle does the velocity of the combined blocks make with the +x-axis after the collision?
Calculate the focal lengths and locations of the principal planes and nodal points of a single thick lens in water (nW=1.33) whose surfaces (from left to right) have radii of curvature - 5.5 cm and +7.5 cm, respectively
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