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1. The coefficient of thermal expansion aT allows the expansion of a liquid to be determined using the equation DV- ¼ aTV-DT. Calculate the decrease in 2 m3 of 40-C water if the temperature is lowered by 10-C. What pressure would be needed to cause the same decrease in volume? 2. Estimate the pressure inside a droplet of 20-C water and a bubble of 20-C water if their diameters are
(a) 40 mm
(b) 20 mm
(c) 4 mm 3. How high would 20-C water climb in a 24-mm-diameter vertical capillary tube if it makes an angle of 20- with the wall of the tube?
You are driving to the grocery store at 19m/s. You are 120m from an intersection when the traffic light turns red. How long does it take you to stop
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
an rlc oscillator circuit contains a 63.0 ohm resistor and a 1.80-mh inductor. what capacitance is necessary for the
Two objects with masses of 2.10 kg and 6.80 kg are connected by a light string that passes over a frictionless pulley. (a) Determine the tension in the string.
A steel rod is 3.203 cm in diameter at 18.00°C. A brass ring has an interior diameter of 3.197 cm at 18.00°C. At what common temperature will the ring just slide
A lens of focal length 15.0 cm is used to create an image of the Full Moon. What is diameter of the image? The Moon's radius and average distance from Earth are 1.74× 106m and 3.85× 108 m, respectively
A sealed rigid tank contains 5.0 kg of water (liquid plus vapor) at 100 oC with a quality of 30.375%. Using the Thermodynamic Tables and the relationship between quality and other thermodynamic properties
An object initially at rest moves a distance x when a force F is applied for time t. How far will the object move of a force of 2F is applied for the same time t
A 100 g ice cube at -10° C is placed in an aluminum cup whose initial temperature is 70° C. What is the mass of the cup
An airplane with a speed of 69.8 m/s is climbing upward at an angle of 40° with respect to the horizontal. Calculate the distance along the ground, measured from a point directly beneath the point of release
A ballistic pendulum is a device used to measure the speed of abullet. A bullet of mass m is fired at a block of wood (mass M)hanging from a string. The bullet embeds itself in the block, and causes the combined block plus bullet system to swing u..
A tunnel of lenght L=150 m, height H=7.2 m, and width W=5.8 m (with a flat roof ) . With a distance D= 60 m beneath the ground. The roof of the tunnel is to be supported entirely by square steel columns, each with a cross-sectional area of 960 cm2..
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