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A 10 kg block of ice slides along a frictionless surface that is inclined at a 60 degree angle with the horizontal. What is the weight of the block
you throw a stone upward with an intial speed of 5.8m/s from a third-story office window. Find the speed of the stone just before it hits the ground
Provide a structure for the following compound: EI mass spectrum: two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: ? 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J =
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
Bob walks up to the crate and begins pushing with 200N of force. What is the magnitude of the frictional force now
Calculate the percentage of I2(g) that will be converted to HI(g) at equilibrium at 355 degrees Celsius if 3.00 mol of I2(g) is mixed with 3.00 mol of H2(g).
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Calculate the magnitude and duration of the acceleration
A partly-full paint can has 0.79 U.S. gallons of paint left in it. What is the volume of the paint and how thick is the layer of wet paint
Two nanowires are separated by 1.0 nm as measured by STM. Inside the wires the potential energy is zero, Estimate the probability that the electron passes from one wire to the other
A car changes it speed from rest to 12 km/hr in 4sec .If the mass of the car is 2000 killograms what is the net force acting on the car
Calculate the total pressure if the volume of the reaction container is then (i) doubled; or (ii) reduced 7-fold.
A 75 kg skater, starts at 6m above the ground, potential energy =0 at 2m above the ground. Calcualte the percentage difference between the two speeds
In the extracton mixture of naphthalene, benzoic acid, ethyl p-aminobenzoate: what form is the organic base and organic acid after extracted into aqueous phase
In the above animation a massive block is attached to a spring. It is sliding back and forth on a frictionless table. The spring has a spring constant 250 N/m. Determine the mass of the block
A 75kg skater starts at a height of 6m above ground, the speed at the lowest point of the track is 10.84 m/s^2. Calculate the speed of the skater
At which angle will the photon scatter with respect to its original direction? (The accepted unit abbreviations for angles are either 'deg' for degrees or 'rad' for radians.)
Draw energy level diagram to show the low- and high spin octahedral complexes of the transition-metal ions that have the electron configurations d4 d5 d6 and d7
What is the weight of the heaviest fish that can be pulledup vertically when the line is reeled in (a) at a constant speedand (b) with an acceleration whose magnitude is 2.0 m/s 2
What is the formula for the compound formed between germanium with a valency of (IV) and iodine? a. Ge4I2 b. Ge2I4 c. GeI4 d. GeI2
A charge of -270e is uniformly spread through the volume of a sphere of radius 2.10 cm. What is the volume charge density in that sphere
What must californium-250 be bombarded with to produce lawrencium-257 and 4 neutrons? a. carbon-8 b. boron-8 c. fluorine-11 d. boron-11
A 10 kg picture is held in place by two wires, the first hanging at 35 degrees to left of vertical and second at 45 degrees to right of vertical
Compute the centripetal acceleration of a point on Earth's equator given earth's 24 H rotation period. Compare your answer with g=9.80 m/s
A geologist finds that a Moon rock whose mass is 10.51 kg has an apparent mass of 6.28kg when submerged in water. What is the density of the rock