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If 2.15 g of an unknown solid nonelectrplyte is dissolved in18.1 g of naphthalene, the resulting solution is found experimentally to freeze 4.3 C lower than pure naphthalene.
Write down the equation of motion of the block and also the equation of motion of the sphere, each in terms of T and a?
Write down separate equations of motion for box a and box b? Calculate the acceleration and the tension in the wire?
A charge (uniform linear density = 7.60 nC/m) lies on a string that is stretched along an x axis from x = 0 to x = 2.00 m. Determine that magnitude of the electric field at x = 5.80 m on the x axis.
Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of lauryl alcohol in 0.100 kg of benzene freezes at 4.1 degrees C. What is the approx. molar mass of
How much energy in (kJ) must be removed in order to change 1.75 moles of water at 46.0 oC to ice at -24.0 oC in a process that takes place a constant pressure of 1.0atm.
The mass above it is held to the ceiling with a string, whose tension is 0.1 N. The masses are 1.4 m apart. What is the charge on the upper sphere (and make sure you get the sign right)?
A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 39 degree above the
Set theory is a model of a boolean algebra, II. Prove that Set Theory is a Model of a Boolean Algebra The three Boolean operations of Set Theory are the three set operations of union (U), intersect
The air outside the balloon has a temperature of 20.0°C and a pressure of 1.00 atm. How large a payload (including the envelope of the balloon itself) can the balloon lift? Use 29.0 g/mol for th
Also if plastic rod is rubbed with fur and acquires a charge of magnitude 7.50 nC. What is the change in mass of the rod?
A double-convex lens is to be made of glass with an index of refraction of 1.5. One surface is to have twice the radius of curvature of the other and the focal length is to be 40 mm. What is the lar
The automobile then undergoes a uniform acceleration of -4 m/s2 because of a red light and comes to rest. It remains at rest for 46.7 s, then accelerates back to a speed of 20.7 m/s at a rate of 2.36
A) A tennis ball is dropped from 1.51 m above the ground. It rebounds to a height of 0.822 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative
Starting at the origin, going clockwise, the particles have masses 2.3 kg, 1.4 kg, 3.7 kg, and 2.9 kg. What is the location of the center of mass of the system of particles?
A hospital patient has been given 131I (half life= 8.04 days) which decays at 4.5 times the acceptable level for exposure to the general public. How long must the patient wait to reach the acceptabl
The electric force on the dust particle is equal to the weight of the particle. What is the charge on the dust particle? If this charge is provided by an excess of electrons, how many electrons does
A speeder passes a parked police car at a constant speed of 37.8 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.43 m/s2.
A steel piano string is 49.6 inches long. The diameter of the string 0.0421 inches. When struck, this string produces the musical note, B, which has the pitch of 123 Hz. (a) Find the tension of this
The coefficient of kinetic friction between the runway and a tire is 0.60. A wheel has a moment of inertia of 2.9 kg m^2 and a radius of 0.15m. How long is the skid mark that the tire leaves on the
a) Is the sphere positively or negatively charged? Explained. b) Calculate the magnitude of charge on the sphere. c) How much excess or deficit of electrons does the sphere have?
A 26.0 kg hammer strikes a steel spike 2.40 cm in diameter while moving with speed of 20.0 m/s. The hammer rebounds with speed 10.0 m/s after 0.110 s. What is the average strain in the spike during
Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.85 m. The density of blood is 1.06×103 kg/m3
a) How wide must this oven be so that it will contain six nodal planes of the microwave disturbance (including the nodal plane at each walls) along its width in the standing wave pattern? b) What i