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A 81.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, What braking force must its rockets provide
If the equilibrium constant for the reaction H2O + CO = CO2 + H2 is 2.5, the equilibrium conversion of CO is lower than 65%
A small pistol fire a 1.5g bullet at 1000 m/s. The bullet strikes a 200g wooden block resting on a horizontal frictionlessl surface, What is the speed of the bullet &block system after the bullet
If the enthalpy change for the reaction is 20 kJ/mol and the entropy change is 50 J/mol/K, the conversion of reactants to products is spontaneous above 400 K.
A solution is made by mixing 0.5 L of 1.0 molarity KBr and 0.5 L of 1.0 Molarity K3PO4. What is the concentration of each ion in the solution
A solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center O. How many radians does the cylinder rotate through in the first 5.0 seconds, if it starts from rest
Say you are presented with two beakers, beaker A and beaker B, each containing a white, powdery compound. a. From your initial observations, you suspect that the two beakers contain the same compoun
A wheel that is rotating at 45 Rad/s is give an angular acceleration of 3 Rad/s (sqrd). Use gravity: 10 m/s, how long is the angular velocity of the wheel
A laboratory electromagnet produces a magnetic field of magnitude 1.54 T. Find the magnitude of the maximum magnetic force that could be exerted on the proton
A 8000 %u03A9 resistor is joined in series with a 10 %u03BCF capacitor. What is the capacitive time constant of this combination
An unknown noble gas effuses through a tiny hole into an evacuated space with a rate that is 0.578 times the rate of N2(g): rateunk/raten2=0.578. calculate the molar mass of the noble gas in g/mol
A stick with a length of 1m is supported by a knife edge at the 50 cm mark (middle). Two masses m1: 0.4 kg and m2: 0.6 kg are hanging.. m1 20 cm from the left end, Calculate the torque created by m1
A particle known as a pion lives for a short time before breaking apart into other particles. what is the lifetime according to a hypothetical person who is riding along with the pion
A string on a guitar vibrates at 420 Hz. If the tension on the string is 102 N, what is the mass of the string if the portion that vibrates is 63.7 cm long
A person sees a distant lightning strike, then 4.5 seconds later he hears the thunder clap. If it is 35 degrees Celsius, how far away was the lightning strike
A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord
A 3.45 kg mass vertically compresses a spring 67.0 cm before it starts to rebound. How high will the Mass move above the uncompressed
A resistance of ohms ,an inductive reactance of 8 ohms and capacitive reactance of 15 ohms are connected in parallel across 120V, Find total current , power factor
A 10 kg crate (begins 3m off the ground) slides along a smooth horizontal frictionless surface at a constant speed of 4 m/s. What is the kinetic energy as it slides on the upper surface
A stunt pilot with mass of 80 kg performs a vertical circular dive of radius 800 m. What forces are acting on the pilot
A wheel has a maximum rate of rotation of 150 revolutions per minute. Starting from rest, Calculate the magnitude of its angular acceleration
An automobile cooling system holds 16 L of water. How much heat does it absorb if its temperature rises from 20C to 86C
An AC generator supplies an rms voltage of 115 V at 50.0 Hz. It is connected in series with a 0.500 H inductor, What is the rms current through the resistor
The 1.20kg head of a hammer has a speed of 8.1m/s just before it strikes a nail and is brought to rest. Estimate the temperature rise of a 14gg iron nail generated by 5.0 such hammer blows done in
In the deep space between galaxies, the density of atoms is as low as 1X10^6 atoms/m^3, and the temperature is a frigid 270 K. If this volume is a cube, what is the length of its sides in kilometers