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A hot air balloon rises from the ground with a velocity of(2.2 m/s)yhat. A champagne bottle is opened to celebrate takeoff, expelling thecork horizontally with a velocity of (5.6 m/s)xhat relativeto the balloon. When opened, the bottleis 5.0 m above the ground. (Neglect air resistance.)
(a) What is the speed of the cork, and its initialdirection of motion, as seen by the same observer?(b) Determine the maximum height above the ground attained by thecork.(c) How longdoes the cork remain in the air?
Three 15-? resistors are connected in parallel. This arrangement is connected in series with a 10-? resistor. What is the effective resistance of the parallel portion of the circuit
A light wave is in normal incidence on a diamond crystal, (a) What is the reflectivity? (b) What is the ratio of the electric field in the reflected wave to that in the incident wave? (c) What percentage of the intensity of the incident wave is trans..
If the plane does 2.00 x 105 J of work to tow the glider 155 m and the tension in the tow rope is 2460 N , what is the angle between the tow rope and the horizontal
A metal rod 0.50 m long moves with a speed of 2.0 m/s perpendicular to a magnetic field. what is the strength of the magnetic field
A microwave oven is powered by a magnetron, an electronic device that generates electromagnetic waves of frequency 2.45 GHz. calculate the speed of the microwaves
For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
Consider a Hydrogen atom with the electron in the n = 7 shell. (The magnitude of the ground state energy of the Hydrogen atom is 13.6 eV.) How many subshells are in this shell
Two blocks of masses m1 = 1.90 kg and m2 = 5.18 kg are each released from rest at a height of h = 5.15 m on a frictionless track, find the maximum height to which m1 rises after the collision
A doubly ionized carbon atom (with charge 2e) is located at the origin of the x axis, and an electron (with charge -e) is placed at x = 7.26 cm. There is one location along the x axis at which the electric field is zero. Give the x coordinate of this..
Analyse the instantaneous velocity of the car
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
A 85.5-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.59 rad/s. Find the angular velocity of the platform with its load
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