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Given the following vectors: A is 25lbs at an angle of 30 degrees clockwise from the +x-axis, and B is 42lbs at an angle of 50 degrees clockwise from the +y-axis. (a) Make a sketch and visually estimate the magnitude and angle of the vector C such that 2A + C -B results in a vector with a magnitude of 35lbs pointing in the +x direction.(b) repeat the calculation in Part(a) using the method of components and compare your result to the estimate in (a).
How much work must this force do to stop the wheel. An electron moving along the x axis has a position given by x = 11te-1t m, where t is in seconds. How far is an electron from the origin when it momentarily stops.
How much kinetic energy will an electron gain (in joules) if it accelerates through a potential difference of 1.30×104V
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
A laser beam of unknown wavelength is incident on a single slit of width 0.25 mm and forms a Fraunhofer diffraction pattern on a screen 2.0 m away. The width of the central bright fringe is measured to be about 7 mm.
As soon as a traffic light turns green, a car speeds up from rest to 59.0 mi/h with constant acceleration 7.00 mi/h/s. For what time interval is the bicycle ahead of the car
Assume 3.0 moles of a diatomic gas has an internal energy of 10 kJ. Determine the temperature of the gas after it has reached equilibrium.
Two musicians are comparing their clarinets. The first clarinet produces a tone that is known to be 442Hz, If the second clarinet produces a higher pitched tone than the first clarinet, what is the second clarinet's frequency
A relaxed crystalline lens has a refractive index n=1.42 and radii of curvature R1=+10.0mm, Calculate the focal length and optical power of the lens
When light from your desk lamp passes through a 45-mm focal length lens, How far is the desk lamp from the lens
A 16.0-kg projectile is fired at an angle of 60.0° above the horizontal with a speed of 86.0 m/s. How far from the point of firing does the other fragment strike
Two trains on separate tracks move toward each other. Train 1 has a speed of 115 km/h; train 2 a speed of 62.0 km/h. What is the frequency heard by the engineer on train 1
The only two forces acting on a body have magnitudes of 20N and 38N and a directions that differ by 76 degrees. What is the mass of the body
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