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Problem #3 : a spherical pressure tank is made of 1050 cold-drawn steel (sy = 84 ksi, su = 100 ksi). the tank has a 40" inner diameter, has a ½" wall thickness, and is pressurized cyclically between
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In a physics lab experiment, a spring clamped to the table shoots a 18 {\rm \;g} ball horizontally. when the spring is compressed 21 {\rm \;cm} , the ball travels horizontally 4.9 {\rm \;m} and lands
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If the joint is subjected to an axial force of p = 8.1 kn , determine the average shear stress developed in each of the 6-mm diameter bolts between the plates and the members.
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How many milliliters of water at 23 °c with a density of 1.00 g/ml must be mixed with 180 ml (about 6 oz) of coffee at 95 °c so that the resulting combination will have a temperature of 60 °c? assu
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Four identical metal spheres have charges of qa = -8.0 μc, qb=-2.0 μc, qc=+5.0 μc, and qd=+12.0 μc. (a) two of the spheres are brought together so they touch, and then they are separated. which sp
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Determine the change in internal energy of 8.00 kg of water when it is all boiled to steam at 100 ∘c. assume a constant pressure of 1.00 atm.
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At what temperature would a 1.45 m nacl solution freeze, given that the van't hoff factor for nacl is 1.9? kf for water is 1.86 ∘c/m . express your answer with the appropriate units.
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A submersible craft is being designed to operate in the atlantic ocean. the density ρ of salt water is 1.025 grams per cubic centimeter. for a maximum design depth of 300 feet, what is the minimum pr
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A sky diver with a mass of 70 kg jumps from an aircraft. the aerodynamic drag force acting on the sky diver is known to be fd = kv @, where k = 0:25n s2=m2. determine the maximum speed of free fall fo
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A rightward force of 302 n is applied to a 28.6 kg crate to accelerate it across the floor. thye coefficient of friction between the crate and the floor is 0.750. determine the acceleration
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An object has a position given by r⃗ = [2.0 m + (3.00 m/s)t] i^ + [3.0m−(4.00 m/s2)t2] j^, where all quantities are in si units. what is the magnitude of the acceleration of the object at time t =
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An automobile engine slows down from 3000 rpm to 900 rpm in 3.0 s.(a) calculate its angular acceleration, assumed constant.rad/s2(b) calculate the total number of revolutions the engine makes in this
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A light-rail commuter train accelerates at a rate of 1.55 m/s2. how long (in s) does it take to reach its top speed of 80.0 km/h, starting from rest?
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A ground state hydrogen atom absorbs a photon of light having a wavelength of 94.92 nm. it then gives off a photon having a wavelength of 4.050 × 103 nm. what is the final state of the hydrogen atom?
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A disk-shaped merry-go-round of radius 3.16 m and mass 147 kg rotates freely with an angular speed of 0.724 rev/s. a 52.3-kg person running tangential to the rim of the merry-go-round at 3.38 m/s jump
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A car travels up a hill at a constant speed of 40 km/h and returns down the hill at a constant speed of 60 km/h. calculate the average speed for the round trip.
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In a video game, a flying coconut moves at a constant velocity of 20 meters/second. The coconut hits an obstacle and moves in the opposite direction with the constant velocity of 10 meters/second. Wha
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Which of these best describe the energy transformation that occur to generate electricity from wind energy
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Acceleration is defined as the rate of change for which characteristic? position time displacement velocity
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Before you begin your lab, you need to form a hypothesis that reflects which material, voltage, and number of winds you think will produce the strongest electromagnet
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The components of vector A and vector B are: Ax=+7.6 Bx=+15.2 Ay=-9.2 By=-18.4 which equation describes the relationship between the two vectors? A. B=A+(2,0) B. B=A C. B=7.6A D. 68
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Javelin at 72 meters/second. he throws it at an angle of 22 degrees. how fast is he throwing it in the x-direction in meters/second?
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When the block is 0.22 m from the equilibrium position (half of the initial displacement), what percent of the total energy of the spring-block system is kinetic energy?
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A camera lens with index of refraction greater than 1.30 is coated with a thin transparent film of index of refraction 1.25 to eliminate by interference the reflection of light at wavelength λ that i
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What is the volume v of a sample of 2.40 mol of copper? the atomic mass of copper (cu) is 63.5 g/mol, and the density of copper is 8.92×103kg/m3?
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Based on this flow rate, and aorta diameter of 0.7 cm, calculate the average velocity and reynolds number of flow in the aorta. is the flow likely to be laminar or turbulent?
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A boeing 747 aircraft weighing 580,000 lb when loaded with fuel and 100 passengers takes off with an airspeed of 140 mph. with the same configuration (i.e., angle of attack, flap settings, etc.), what
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Unpolarized light passes through three ideal polarizing filters. the first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal,
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An rlc circuit has a capacitance reactance, due to its capacitance, of 11 kω; an inductive reactance, due to its inductance, of 3 kω; and a resistance of 29 kω. what is the power factor of the circ
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A long, flexible, and very light strip of metal, such as a saw blade, is clamped to the edge of a table, extending horizontally over the edge like a miniature diving board. when a gob of putty is plac
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What spring constat would you need to have a 3 kg mass oscillate on the spring iwht hte same period t as the mass owuld have hanging from a simple?
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Which has the larger kinetic energy, a 13 g bullet fired at 490 m/s or a 10 kg bowling ball rolled at 11 m/s?
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A soccer ball is kicked with a speed of 20 m/s at an angle of 35 degrees above the horizontal. how long is the ball in the air?
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A 58-in. (inside) diameter garden hose is used to fill a round swimming pool 7.5 m in diameter. part a how long will it take to fill the pool to a depth of 1.7 m if water issues from the hose at a spe
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What frequency frecede is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it? express your answer in h
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A counter-flow double-pipe heat exchanger is to heat water from 20°c to 80°c at a rate of 1.2 kg/s. the heating is to be accomplished by geothermal water available at 160°c at a mass flow rate of 2
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What minimum number of cycles are necessary for the engine to lift a rock of mass 570 kg through a height of 150 m?
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68 kg tennis ball is given an angular momentum of .00272 kgm2/s when struck by a racquet. if its radius of gyration is 2 cm, what is its angular velocity
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A 129-kg astronaut (including space suit) acquires a speed of 2.30 m/s by pushing off with her legs from a 1850-kg space capsule. use the reference frame in which the capsule is at rest before the pus
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At a pressure of one atmosphere oxygen boils at −182.9°c and freezes at −218.3°c. consider a temperature scale where the boiling point of oxygen is 100.0°o and the freezing point is 0°o. deter
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The desk has a weight of 75 lb and a center of gravity at g. determine its initial acceleration if a man pushes on it with a force f = 60 lb. the coefficient of kinetic friction at a and b is mk = 0.2
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Consult concept simulation 6.1 in preparation for this problem. a golf club strikes a 0.065-kg golf ball in order to launch it from the tee. for simplicity, assume that the average net force applied t
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Calculate wa, the work done by the gas as it expands along path a from v0 to va=rvv0. express wa in terms of p0, v0, and rv.
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The gravitational acceleration on a planet's surface is 16.0 m/s2. what is the gravitational acceleration at an altitude of one planet diameter above the surface of the planet?
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(a) find the potential at point p. (q = 2.5 x 10-9c, a = 50 cm) (b) how much work by an external force is required to move a charge of - 3 µc to point p. (c) if the particle (mass = 5.0 µg) were rel
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What is the single most important parameter in determine the material removal rate in a machining process?
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True or false the light that is emitted from a semiconductor, upon external stimulation, is longer and longer in wavelength as the particle size of the semiconductor decreases.
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Consider three capacitors c1, c2, and c3 and a battery. if only c1 is connected to the battery, the charge on c1 is 32.2 µc. now c1 is disconnected, discharged, and connected in series with c2. when
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A charge per unit length given by l(x) = bx, where b = 12 nc/m2, is distributed along the x axis from x = +9.0 cm to x = +16 cm. if the electric potential at infinity is taken to be zero, what is the
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Using signed 8-bit representation, determine the result of 53 - 88. show how you got your answer using binary arithmetic and the 2's complement system.
