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A child holds a candy bar 26.0 cm in front of a convex mirror and notices that the image is only one half the size of the candy bar. What is the radius of curvature of the mirror?
Water at a pressure of 3.4 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 7 cm in diameter. The pipes taper down to 2.6 cm in diameter by the top floor, 28 m
The weight of a certain crown in air is 14 N and its weight in water is 12.7 N. assuming that the uni weight of water is 9.79 KN/m3 and the crown is an alloy of gold (sp. gr. =19.3) and silver (sp.
How many different disulfide pairing arrangements are possible? Derive a general formula for the number of different pairing arrangements when there are n cysteins.
A 28 gram rifle bullet traveling 230 m/s buries itself in a 3.6 kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal com
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. Calculate the x-component of this vector.
A 1700 kg car traveling at a speed of 19 m/s skids to a halt on wet concrete where f_k = 0.60. how long is the cars skid marks?
A 59 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. If the skier's speed at point A as shown below is 7.0 m/s, what is the norm
How long does it take for the last car to to come to rest momentarily? How far did the last car travel before momentarily coming to rest?
Two large, parallel, conducting plates are 11 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 3.3 x 10-15 N acts on an electron pl
A car traveling at 30 mi/h is to stop on a 39 m long shoulder of the road. what is the required magnitude of the minimum acceleration?
An astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball's 22 km fall at a value of 3.6 m/s2. (We assume that the cra
If each rock strikes the fixture traveling at 10.0 m/s, how high will the light fixture go after it is hit by one of these new missiles?
A slide projector needs to create a 96.0 cm-high image of a 2.20 cm-tall slide. The screen is 296 cm from the slide. How far should you place the lens from the slide?
A truck travels beneath an airplane that is moving 170 km/h at an angle of 51 to the ground. How fast must the truck travel to stay beneath the airplane? Answer in units of km/h
Take the mass of the sun to be = 1.99×10^30, the gravitational constant to be = 6.67×10^-11 , and the acceleration due to gravity at the earth's surface to be = 9.810 m/s^2
The ball is leaves the kicker's foot at an angle of 51° above the ground with a velocity of 17.0 m/sec. Determine the horizontal and vertical components of the launch velocity.
The potential difference between two parallel conducting plates in vacuum is 600 V. An alpha particle with mass of 6.50×10-27 kg and charge of 3.20×10-19 C is released from rest near the
An object is placed in front of a concave mirror, 23.0 cm from the mirror's focal point. The image formed by the mirror is three times farther away from the focal point. Calculate the focal length
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground?
If you exert 20.0N of horizontal force while pushing a 10.2kg box across the floor at a constant velocity, what is the coefficant of kinetic friction between the floor and the box?
The temperature of the glass surface of a 70 W lightbulb is 66 degrees C when the room temperature is 20 Deg. C. Estimate the temperature of a 150 W lightbulb with a glass bulb of the same size. Con
Suppose we have an infinitely long wire carrying a current of 2.0 A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find the magnitude of the magnetic field
The initial speed of school bus is 10.0 m/s. If the bus slows down to 2.0 m/s in 1 seconds what is the acceleration (positive or negative) of the bus?
Calculate values for the following. A) wavelength in nanometers. B) Frequency in Hz. C)Energy of emitted photon in eV.