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While crossing campus you get your directions mixed up. You start traveling 272 m East; you then travel 103 m traveling 48 North of East; then you travel 306 m West. What is your final distance from w
(Note that A, sometimes called the "footprint" of the object, can have any shape and that the height can, in general, be replaced by the average thickness of the object.
The moment you pass the police car, you realized that you are speeding and start to slow down at a constant acceleration of 1.50 m/s^2. At the same time, the police car starts to accelerate a consta
A vertical force T is exerted on a 7.5 kg body near the surface of the earth. Find the y-component of the acceleration of the body if T= 41.025 N.
A point charge +q is at the origin. A spherical Gaussian surface centred at the origin encloses +q. So does a cubical surface centered at the origin and with edges parallel to the axes. Select T-Tru
A uniformly charged sphere has a potential on its surface of 450 V. At a radial distance of 9.2 m from this surface, the potential is 150 V. What is the radius of the sphere, and what is the charge
The electric field at the surface of the larger sphere is 920 kV/m. Find the surface charge density on each sphere.
What is the electric flux through the top face of the box? (The top face of the box is the face where z=a. Remember that we define positive flux pointing out of the box.)
A 25 g glass tumbler contains 370 mL of water at 24°C. If four 15 g ice cubes each at a temperature of -3°C are dropped into the tumbler, what is the final temperature of the drink? Neglect
A person jumps from the roof of a house 3.4 high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 . If the mass of his torso (
An electric flux of 141 N.m2/C passes through a flat horizontal surface that has an area of 0.72 m2. The flux is due to a uniform electric field. What is the magnitude of the electric field if the
A thin metallic spherical shell of radius 42.1 cm has a total charge of 9.05 oC uniformly distributed on it. At the center of the shell is placed a point charge of 4.43 oC. What is the electric field
During a racing event, a 1400 kg car accelerates from 0 to 31 m/s in 4.5 s. What is the net force exerted on the car?
Standing on top of the Oread Hotel (height = 34 m) you throw a water ballon with an initial velocity of 24 m/s and 50o above the horizontal leaving the edge of the hotel. How far, in meters, from th
A projectile is fired with an initial velocity of 88m/s at an angel of 42 degrees above horizontal. At the projectile's highest point its velocity is:
The frequency of a tuning fork can be found by the method shown. A long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube.
A point charge +6.0uC is placed at the origin, and a second charge -3.8uC is placed in the x-y plane at (0.35m , 0.55m ). Where should a third charge be placed in the plane so that the net force act
What is the frequency of the tuning fork? The speed of sound in air is 343 m/s. Answer in units of Hz How many nodes are in the tube after the water has reached the second distance from the top of t
Two point charges, -10nC and +16nC , are held fixed a distance 0.55m apart. Assume that both charges lie on x-axis, for the -10nC x= 0 and for the +16nC charge x= 0.55 . (a) Where can a +20nC charge
A car starting at x= 75m accelerates from rest at a constant rate of 3.35m/s^2. After 4.40s its velocity is 14.74m/s. Its x position after 4.40s is:
For the automobile, determine its change in kinetic and potential energy, each in kJ. For each quantity, kinetic and potential energy, specify your choice of datum and reference value at that datum.
A patient is going to be prescribed bifocals which will be 2.00 cm from the eye. The prescribed powers (in diopters) for the bifocals are +0.80 and -1.60, and these bifocals give the patient normal
A patient has a far point of 39.5 cm and a near point of 21.4 cm. A.) What power (in diopters) should be prescribed to correct the patient's vision using a contact lens?
Grass clippings are found to have an average length of 3.8cm when a lawn is moved 10 days after the previous mowing. What is the average speed of growth of this grass in cm/days?