11/05/22
please help me! :(
What is the difference in blood pressure (in mm of Hg) between the top of the head and bottom of the feet of a 1.61m-tall person standing vertically? (The density of blood is approximately 1060...
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10/27/22
Find the mass, in metic tons, of the second car.
A train car with mass 37.0 metric tons rolls on a track with a speed of v1 = 3.72 m/s. It collides and couples with a stationary car. After the collision, the two cars rolls together with a speed...
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10/24/22
Please help me!
A 0.150 kg baseball pitched at 40.0 m/s is hit on a horizontal line drive straight back at the pitcher at 50.0 m/s.a) If the contact time between bat and ball is 3.90 ×10−3 s, calculate the...
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10/04/22
A seagull flies with an air speed of 14m/s straight into the wind. Include units as appropriate below. If under these conditions it takes the bird 20min to travel 6km, what is the speed of the wind?
A seagull flies with an air speed of 14m/s14m/s straight into the wind. Include units as appropriate below.(a) If under these conditions it takes the bird 20min20min to travel 6km6km, what is the...
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09/28/22
An object is dropped from a height of 85.0m85.0m above ground level. Treat the effect of air resistance to be negligible and the upwards direction to be positive.
Include units as appropriate below.a) Determine the distance travelled after 0.50s0.50s.(b) Determine the velocity at which the object hits the ground.(c) Determine the distance travelled in the...
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Dynamics question physics problem
A piece of ice (m = 500.0 g) slides down the slope of a roof inclined at 50.0°. It starts from rest and slides 8.0 m along the roof, sliding off the edge at a height of 4.0 m above the level...
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12/06/21
A 3.8 kgkg lead ball is dropped into a 2.5 LL insulated pail of water initially at 20.0∘C∘C. If the final temperature of the water-lead combination is 26.8 ∘C∘C, what was the initial t
A 3.8 kgkg lead ball is dropped into a 2.5 LL insulated pail of water initially at 20.0∘C∘C. If the final temperature of the water-lead combination is 26.8 ∘C∘C, what was the initial temperature of...
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12/04/21
An automobile cooling system holds 16 L of water.How much heat does it absorb if its temperature rises from 17 ∘C to 89 ∘C? Express your answer using two significant figures.
An automobile cooling system holds 16 LL of water.How much heat does it absorb if its temperature rises from 17 ∘C∘C to 89 ∘C∘C?Express your answer using two significant figures.
12/04/21
By what factor will the rms speed of gas molecules increase if the temperature is increased from 30 ∘C to 130 ∘C?
By what factor will the rms speed of gas molecules increase if the temperature is increased from 30 ∘C∘C to 130 ∘C∘C?
11/28/21
Find an expression for the period T of a wave in terms of other kinematic variables.
Find an expression for the period TT of a wave in terms of other kinematic variables. Express your answer in terms of any of f, v, ω, and simple constants such as π.
Álgebra. 2 problem
Starting from the same place a plane took 1 hr longer to fly 705mi to Atlanta, than to fly 470 miles to New Orleans.If the plane flew at the same rate for the entire trip, what was the flying time...
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02/09/15
displacement, pressure amplitude & distance to sound level
A certain source of sound radiates uniformly in all directions in air. At a distance of 5 m the sound level is 80 dB. The frequency is 440 Hz. (a)What is the displacement amplitude at this...
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