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The pilot of an aircraft wishes to fly due west in a 47.7 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 197 km/h.
(a) In what direction should the aircraft head?
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.47 meters above the ground. how high above the ground was the acorn before it fell
A Ferris wheel with a radius of 7.7 m rotates at a constant rate, completing one revolution every 37 s, Find the direction and magnitude of a passenger's acceleration when at the bottom of the Ferris wheel
An ideal spring with a stiffness of 379N/m is attached to a wall, and its other end is attached to a block that has a mass of 16-kg. The spring/block system is then stretched away from the spring's relaxed position until 59J of mechanical potentia..
A sound generator simultaneously produces two different frequencies, 240 Hz and 360 Hz. What will be the frequency of the third tone
Landing on the Moon, a spacecraft fires its retrorockets and comes to a complete stop just 19m above the lunar surface. It then drops freely to surface.How long does it take to fall in seconds? What is its impact speed in meter per seconds.
The coil in Fig. 28-49 carries current i = 2.47 A in the direction indicated, is parallel to an xz plane, What is the magnetic torque (in unit-vector notation) on the coil
The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2? R2 and R3 are parallel so these need to be treated with R1 as Requiv = R1+ (R2*R3)/R2+R3 but don't know where to ..
Two polarizers are aligned to the angle between their polarization direction is 45 degrees. what fraction of the incident intensity is transmitted though the second
A 9.40kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 69.5kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
A constant horizontal force a pushes a kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. package's x and y velocity components versus time t.
A 7.0 kg ball with the initial velocity of (7i+5j)m/s collides with a wall and rebounds with a velocity of (-7i+5j)m/s. what is the impulse exerted on the ball by the wall
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