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Meadow Freeman
Physics
what's the equation that links change in gradational potential energy store, mass, gravitational field strength, height
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Keely Koch
Physics
Which of the following is an example of an archery contestant showing good
precision but poor accuracy?
O
A. Hitting a bulls-eye once and then missing a second time
O
B. Hitting a bulls-eye every time
O
C. Missing the bulls-eye but hitting the same spot every time
O
D. Hitting a target randomly
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Kaiser
Physics
Is a battery that generates hydrogen, is that very explosive
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Dickerson
Physics
Pylon cables in the National Grid have some resistance. Power (watts) = Current2 (amperes) x Resistance (ohms) Looking at the power equation above, can you explain why transmitting electricity at a very high voltage is beneficial? Hint: Think about the equation Power (W) = P. D (V) x Current (A) Equation
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Sampson
Physics
In 1996, NASA performed an experiment called the Tethered Satellite experiment. In this experiment a 2.30 104-m length of wire was let out by the space shuttle Atlantis to generate a motional emf. The shuttle had an orbital speed of 7.50 103 m/s, and the magnitude of the earth's magnetic field at the location of the wire was 5.40 10-5 T. If the wire had moved perpendicular to the earth's magnetic field, what would have been the motional emf generated between the ends of the wire?
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Alexa Pittman
Physics
Three boys of equal strength try to break a rope (and fail) by tying one end to a fence post and tugging on the other end. Three additional boys (about the same strength as the others) come along and offer their assistance. Which of the following will maximize the tension in the rope?
A. It does not matter: the rope sustains the same tension in both cases.
B. Untie the rope from the post and have three boys tug on one end and the remaining three on the other (like a tug - of-war)
C. Keep one end of the rope tied to the post and have all six boys tug on the other end.
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Pork Chop
Physics
When the computer you are working on uses energy it also produces waste energy. What type of energy is this waste energy?
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Warren Odom
Physics
Atom are made of three basic components. Name these three particles.
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Alicia
Physics
Part of the solar radiation entering the atmosphere about ___ actually reaches the earth's surface
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Guest
Physics
A 36.5 kg box initially at rest is pushed 4.30 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, find the following.
(a) the work done by the applied force
(b) the energy loss due to friction,
(c) the work done by the normal force,
(d) the work done by gravity,
(e) the change in kinetic energy of the box, and
(f) the final speed of the box
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Lilah Vega
Physics
3 In a television tube, an electron starting from rest experiences a force of 4.0 * 10-15 N over a distance of 50 cm. The final speed of the electron is (do not worry about relativistic effects) :
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Abby Bell
Physics
Detail some of the anthropogenic changes to Earth's climate and their potential impact on life.
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Kyan
Physics
I have completed 40 minutes of exercise today and will enter a short description in the course Activity Log. True or False
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Jair Graves
Physics
An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another. An octet is formed via covalent bonding when valence electrons are shared between atoms. True or false?
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Fletcher Jacobson
Physics
How can a driver best be prepare to enter sharp curves
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