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Suppose that the concentration of infrared-absorbing gases in earth's atmosphere were to double, effectively creating a second "blanket" to warm the surface. Estimate the equilibrium surface temperature of the earth that would result from this catastrophe. (Hint: First show that the lower atmospheric blanket is warmer than the upper one by a factor of 21/4. The surface is warmer than the lower blanket by a smaller factor.)
two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator, whose frequency range is 1350 Hz to 1826 Hz. What is the frequency produced by the oscillator
Vector has x and y components of -8.70 cm and 15.0 cm, respectively; vector has x and y components of 13.2 cm and -6.60 cm, respectively. If , what are the components of ?
In the LC circuit below the capacitor is charged to its maximum 48 μC while the switch S is open. The switch is closed at t = 0. Find the energy stored in the inductor at t=T/4, where T is the period of circuit oscillations.
You push with a horizontal force of 48.0 against a 23.0 box, pressing it against a rough wall to hold it in place. What is the friction force on the box
What quantum number of the hydrogen atom comes closest to giving a 500-nm-diameter electron orbit, What is the electron's energy in this state
Years ago, a block of ice with a mass of about 19.0 kg was used daily in a home icebox. The temperature of the ice was 0.0°C when it was delivered. how much heat did a block of ice absorb
The centers of a 10kg lead ball and a 90g lead ball are separated by 8.0cm. What is the ratio of this gravitational force to the weight of the 90g ball
The acceleration of a bus is given by ax(t)=αt, where α = 1.28m/s3 is a constant. If the bus's position at time t1 = 1.13s is 5.92m, what is its position at time t2 = 2.02s
what is the ratio of the amplitude of damped oscillations.
A 0.80-kg book moves verticallyupward a distance of 17 m, andthen vertically downward 17 m,returning to its initial position. How much work is done by gravity during the upward motion of the book?
A 40.0 kg beam is attached to a wall with a hinge while its far end is supported by a cable such that the beam is horizontal. what is the vertical component of the force exerted by the hinge on the beam
question1a backpack full of books weighing 53.0 rests on a table in a physics laboratory classroom. a spring with a
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