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A 2 000 kg sailboat experiences an eastward force of 3 000 N by the ocean tide and a wind force against its sails with magnitude of 6 000 N directed toward the northwest (45 degrees N of W). What is
Two blocks, joined by a string, have masses of 6.0 kg and 9.0 kg. They rest on a frictionless horizontal surface. A 2nd string, attached only to the 9 kg block, has horizontal force = 30 N applied t
An arrow is shot at an angle of 45 degrees above the hortizontal. The arrow hits a tree ditance D= 220m away, at the same height aboventhe ground as ut was shot. Use g = 9.8m/s2 for the magnitude of
When enzymes are present in very low concentrations, their effecton the rate of a reaction can be described using first-order kinetics.
The heating element wire shorts out and in repairing it, the owner sortens the wire length by 10%. (assume the temperature is unchanged) the shorter heating wire has an effect on the power dissipat
If the two-block system acclerates at 0.5 m/s2, what is the tension in the second string attached to the 8 kg mass?
You have toseparate 4-toluic acid (a strong acid, pKa 4.36 - look upstructure) from 4-bromoaniline (a base - look up structure).Assume the two substances don't react with each other.
The surface of the sun is at approximately 5700K and the temperature of the earth's surface is about 290K. What is the total entropy change occurs when 1000J of heat energy is transferred from the s
If you found this clock running too slowly, explain how would you adjust the circuit parameters to make it run faster?
In the titration of acetic acid and NaOH titration the use of the color indicator mandates that excess base be added in order to detect the reaction endpoint.
A silver bar of length 30 cm and a cross-sectional area 1.o cm2 is used to transfer heat from a 100oC reservoir to a 0oC block of ice. How much ice is melted per second? (For silver, k= 427 J/s.m.oC
You have a 1 liter container which contains 0.5 liters of water at 25 degrees celsius that is sealed. You then add 1 μg of phenanthrene to the water. The phenanthrene has a K' H of 0.001 and
A 5-g lead bullet traveling in 20oC air at 300 m/s strikes a flat steel plate and stops. What is the final temperature of the lead bullet? (Assume the bullet retains all heat) The melting point of l
The stones are thrown with the same speed of 8.88 m/s. Find the location (above the base of the cliff) of the point where the stones cross paths.
When enzymes are present in very low concentrations, their effect on the rate of a reaction can be described using first-order kinetics.
A daredevil decides to jump a canyon. Its walls are equally high and 15 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 10°. What minimum speed must he have i
Starting with a 0.1M solution and making a series of 1:100dilutions, how many dilutions must be made to prepare a solution,that on average, has fewer than one molecule of soute per liter of solvent?
The entering car maintains its acceleration. How much time is required for the entering car to catch up with the other car?
Suppose that the turntable achieves its angular speed by starting from rest and undergoing a constant angular acceleration for 0.30 s. Calculate the minimum coefficient of static friction required fo
How many grams of propane are required to be burnt in order tochange 100g of ice at 0 degrees celcius into steam at 110 degrees celcius?
A piece of conductor of length 0.4 m is moving in a uniform magnetic field of strength 0.5 T. Its velocity is perpendicular to the magnetic field. Its speed is 1.5 m/s. The electromotive for in the
A long solenoid carries a current of 10 A. The coil is wound 500 turns per meter. a) The direction of the magnetic field in the solenoid is pointing to?
A parallel-plate air filled capacitor having area 66cm2 and plate spacing 4.0mm is charged to a potential difference of 350V. Find (a) the capacitance (b) the magnitude of the charge on each plate (
Suppose you wished to find the percent of alcohol in a alcoholic beverage. Alcohol has a density of 0.79 gram/mL and water has density of 1.00gram/mL. Describe how you would use a hydrometer to acco
You cannot take a TLC and visualize the separation of cis- and trans-2-butene because they are so volatile that they will evaporate before being detected. In theory, which isomer would have the lowe