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A force of magnitude 8.0 N pushes on a horizontally stacked set of blocks on a frictionless surface with masses m1 = 2.0 kg, m2 = 3.0 kg.
The half-life (the time required for the body to eliminate one-half of the total amount of caffeine) varies widely depending on factors such as
As the car accelerates away from a stoplight, in which direction does the balloon move relative to the car? Explain.
Perfluorooctane sulphonate (PFOS) is considered to be a persistent environmental pollutant, with a half life in natural water of approximately 41 years
For dioxins in fathead minnows, the BCF = 29,200. The half-life for elimination of dioxins from fathead minnows is 14.5 days.
Three radioactive sources each have activities of 1.0 micro Curies (Ci) at t=0. Their half lives are 1 sec, 1 hour and 1 day respectively
You are driving north on a highway. Then, without changing speed, you round a curve and drive east.
Describe the experimental evidence for wave-particle duality. State the uncertainty and correspondence principle.
Under the conditions of question 1, how far does the shell land past the edge of the cliff?
A drug that has an half life of 20 hours inside the human body and is administered intravenously (I.V.) into a patient.
A 980 Kg car traveling at 20 m/s rounds a curve of radius 40 m. What is the friction force that must act on the car to keep it in its circular path?
What maximum magnitude can it have if the ball is to strike the floor inside the back line on the other side of the net?
Pu-241 is produced from neutron absorption by Pu-240 (which is produced by neutron absorption by Pu-239). Calculate the fractional in-growth of Am
An artillery shell is fired with an initial velocity of 300 m/s at 55° above the horizontal. It explodes on a mountainside 42 seconds after firing.
The following percentages of three pesticides added to a soil remained after increasing times.
One end of a spring is attached to a solid wall while the other end just reaches to the edge of a horizontal, frictionless tabletop.
An object with an initial velocity 8m/s moves along a straight line with constant acceleration and travels 640m in 40s.
What would the diameter of such a disk need to be if it is to store an amount of kinetic energy of E when spinning at an angular velocity of omega.
If you body is emitting infrared radiation of wavelength 9.4 x 10^(-6)m, what is the energy of the released photons?
Merry-Go-Round. Two identical twins, Jena and Jackie, are playing one December on a large merry-go-round a disk mounted parallel to the ground.
Two inertial frames O and O' are in standard configuration. Write down the two equations relating spacetime intervals Delta x' and Delta t' in O'
Assuming no energy escapes, find the approximate temperature rise of 1kg of 235U over 1year from decay.
Carbon-14 datin of ancient objects requires that material to be organic in order to assay its age. You hear someone sat that a dinosaur bone ws carbon dated
The muon is a subatomic particle with the same charge as an electron but with a mass that is 207 times greater. m_u = 207m_e.
A stone is thrown vertically downward with a speed of 6m/s from a cliff. How far down will the stone be from the cliff after 3.0 s?