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A) Tammy leaves the office, drives 64km due north, then turns onto a second highway and continues in a direction of 33 degrees north of east for 79 km. What is her total displacement from the office? Answer in units of km.
B) At what angle is her displacement? (Consider east t be 0 degrees and north 90 degrees.)
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -42 µC. How many excess electrons does she get, and by how much does her mass increase?
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 1.4 mT. determine the time it takes to complete one revolution
As you ride your 14-kg bicycle on level ground you do some work against a 30N force of air resistance if your mass is 65-kg.What is power you apply to maintain a velocity of 25-km`.a-on level ground b-going up a 5degrees slope?(remember it's a num..
A steady current of 1.5 A flows through a 3600 ohm resistor for 2 seconds. How many charges are flowing at any point in the wire during the 2 seconds
A 3.4 k and a 2.4 k resistor are connected in parallel; this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W (maximum without overheating), what is the least voltage that can be applied across the whole..
The primary coil of a transformer has 237 turns; secondary coil has 2100 turns. An alternating current is sent through the primary coil. The emf in the primary is 25 V. What is the emf amplitude in secondary.
A metal rod with a length of 26.0cm lies in the xy-plane and makes an angle of 34.5? with the positive x-axis, What is the magnitude of the emf induced in the rod
A typical red blood cell subtends an angle of only 1.8×10^-5 rad when viewed at a person's near-point distance of 25 cm. find the magnitude of the angle subtended by the red blood cell
Light of wavelength 646 nm from a distant source is incident on a slit 0.760 mm wide, and the resulting diffraction pattern is observed on a screen 3.60 m away. What is the distance between the two dark fringes
On a friction less horizontal air table, puck A w/ mass 0.250 kg is moving towards puck B w/ mass 0.350 kg that is initially at rest. What was the speed of puck B before the collision
A group of hikers hears an echo 3 s after shouting. If temperature is 16°C, how far away is the mountain that reflected sound wave.
How many atoms are there in a cubic centimeter of a solid and what is the velocity of the motorist relative to the police car and what is the velocity of the police car relative to the motorist?
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