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Zoe
PhysicsPhysics
A certain fluid (with properties listed below) is heated from 25 to 75 °C as it moves at 0.2 m/s through a straight thin-walled tube of 12.7-mm diameter. The tube is 10 m long and provides a uniform heat flux. The fluid enters the tube with a fully developed velocity profile and a uniform temperature profile.

a) What is the required heat flux?

b) What is the thermal entrance length?

c) What is the surface temperature of the tube at the exit (x-3 m) ?

d) What is the surface temperature of the tube at a distance of 0.5 m from the entrance?
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Timothy Elliott
PhysicsPhysics
What energy is the flow of electrons that creates a charge, one of the main forms of energy
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Chasity Vargas
PhysicsPhysics
6. An object with a mass of 2000 g accelerates 8.3 m/s? when an unknown force

is applied to it. What is the amount of the force?
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Jayson Palmer
PhysicsPhysics
In an electron cloud, an electron farther east away from the nucleus has?
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Karter Webb
PhysicsPhysics
When heated a solution of carbonic acid yields carbon dioxide gas and water vapor. Classify this reaction.

H2CO3 (aq) → CO2 (g) + H2O (g)

A) Synthesis

B) Decomposition

C) Double Replacement

D) Single Replacement
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Houston Duran
PhysicsPhysics
Space scientists have a large test chamber from which all the air can be evacuated and in which they can create a horizontal uniform electric field. The electric field exerts a constant hor-izontal force on a charged object. A 15 g charged projectile is launched with a speed of 6.0 m/s at an angle 35° above the hori-zontal. It lands 2.9 m in front of the launcher. What is the magni-tude of the electric force on the projectile?
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Kymani Woodard
PhysicsPhysics
On Earth, Yancy hits a golf ball as hard as he can. The golf ball flies 150 meters before hitting the ground. About how far would the golf ball fly if Yancy hit it on the surface of Mercury with exactly the same amount of force and in the same direction? (Ignore the air resistance on both planets.) A. 150 yards B. more than 150 meters C. 150 meters D. less than 150 meters
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Guest
PhysicsPhysics
Which of the following is a concern about globalization
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Casey Chase
PhysicsPhysics
A neutron and a proton combine to form a nucleus. How does the mass of the nucleus compare with the sum of the masses of its individual particles?

A. The nucleus has less mass, because matter is converted into binding energy.

B. The nucleus has more mass, because matter is converted into binding energy.

C. The nucleus has less mass, because binding energy is converted into matter.

D. The nucleus has more mass, because binding energy is converted into matter.
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Guest
PhysicsPhysics
State five effect of heat matter
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Royce Sharp
PhysicsPhysics
What is the difference between a bound orbit and an unbound orbit around the sun?
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Gaige Sullivan
PhysicsPhysics
Explain why a running cheetah has kinetic energy.
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Travis Mckee
PhysicsPhysics
Which factors affect the gravitational force between two objects?

distance and velocity

mass and distance

mass and weight

acceleration and weight

802
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Guest
PhysicsPhysics
DNA can be classified as what type of evidence? Choose all that apply.

-Class Evidence

-Physical circumstantial evidence

-Biological circumstantial evidence

-Direct evidence

-Individual evidence
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Journey Soto
PhysicsPhysics
Dr. Wolski does research on the potential relationship between neurotransmitter deficiencies and mood states. Which psychological specialty does Dr. Wolski's research best represent
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