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A mass m1 is hanging from a light cord which is strung over a pulley of moment of inertia I and radius R0, What are the tensions in each part of the light cord
Find the temp (in K) above which a reaction with a delta H of 123.0 kj/mol and a delta S of 90.0 J/k*mol becomes spontaneous.
A wooden block with mass 1.75kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 33.0?, Calculate the amount of potential energy that was initially stored in the
a)how are a beta particle and an electron similar? b)what symbols are used for beta particles? c)what is the source of a beta particle
A metal rod 0.72m long moves with a speed of 2.2m/s perpendicular to a magnetic field. what is the strength of the magnetic field
A certain spring is found not to obey Hooke's law; it exerts a restoring force Fx(x)=??x??x2 if it is stretched or compressed, Calculate the potential energy function U(x) for this spring. Let U=0 whe
A 0.160 g sample of rock was found to have 2.11 × 10-6 mol of potassium-40 (t1/2 = 1.3 × 109 yr) and 2.11 × 10-6 mol of argon-40. How old was the rock? (What assumption is made abo
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.900m/s, What is the frequency and amplitude of the wave
What is the minimum mass of ethylene glycol (C2H6O2) that must be dissolved in 14.5 kg of water to prevent the solution from freezing at -15.2 F
The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 14? and consumes 9.7W of power, find speed of the rod
The value of delta H for the decomposition of gaseous sulfur trioxide to its component elements, 2SO3 (g) ---> 2S (s, rhombic) + 3O2 (g) is _____ kj/mol.
A ball is thrown in the air at an initial angle 35 degrees above the horizontal. It takes 4 seconds for the ball to hit the ground
Suppose that a radiologist who is 4.0 m from a small, unshielded source of radiation receives 3.4 units of radiation. To reduce the exposure to 0.34 units of radiation, to what distance from the sou
Calculate delta Hvap of pure alcohol using clausius-clapeyron equation. At 19 C vapor pressure for pure alcohol is 40 torr. At 35 C vapor pressure for pure alcohol is 100 torr
What mass of cesium bromide must be added to .500 L of water (d=1.00g/mL) to produce a 0.144 m solution? What are the mole fraction and the mass percent of CsBr
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
What is the molality of a solution consisting of 3.43 mL of carbon tetrachloride (CCl4; d=1.59 g/mL) in 78.4 mL of methylene chloride (CH2Cl2; d=1.33 g/mL)
an RLC series circuit consists of a 24 V (rms) 0.50 Hz AC power supply, a 25 ohm resister, a 10 H inductor, and a 0.050 F capacitor, what is the rms current through the inductor
Complete the following reaction: Pb-210 decays by ? (beta) emission to form what new necleus? Write the complete nuclear equation.
An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam
Suppose that you have two identical capacitors and a single resistor. If you make an RC circuit with one capacitor, What is the time constant for this circuit
the vapor pressure of water is 25 mmHg: a) What is the pressure of the dry O2 gas? b) How many moles of O2 were produced? c) How many grams of KClO3 were produced
A gas mixture contains helium and oxygen at partial pressures of 255 torr and 0.450 atm. what is the total pressure, in mmHg, of the mixture after it is placed in a container on-half the volume of t
A double slit with d= 0.02 mm is illuminated by a blue laser at 450 nm and a red laser at 650 nm, what is the distance separating the blue and red fringe
A screen with a double-slit with a slit separation of 0.03 mm is illuminated by light of a wavelength 600nm. What is the distance from the slit to the screen in meters