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1. Draw a position-time graph to match the story. Make sure the graph is to scale. (show all your math work!). Bob walks through the jungle at 3 m/s, traveling 35 m. He hears a twig break and belly crawls forward 10 meters in 20 seconds. He stops there to spy on a group of bad guys for the next 15 seconds before sprinting back to his starting position at 6 m/s.
2. Jane becomes a racecar driver and enters the Circuit. Explain how can he:
a. have a positive speed and positive acceleration?
b. have a positive speed and no acceleration?
c. have positive speed and negative acceleration?
a proton traveling with a velocity of 7.4 times 106 ms due east experiences a magnetic force that has a maximum
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
It takes 25 turns to drive a screw completely into a block of wood. Because the friction force between the wood and the screw is proportional to the contact area between the wood, what is the total work (in J) required to drive in the screw
The avarage intensity of solar radiation that falls normally on surface just outside the earth's atmosphere is 1.4 kW/m^2. What radiation pressure is exerted on this surface, assuming complete absorption? How does this pressure compare with the earth..
A camera lens has a focal length of 50.0 mm and an aperture setting of 4.00. What is the aperture diameter of this lens
A disk of radius 217 cm rotates about its axis. Points on the disk\'s rim undergo tangential acceleration of magnitude 2.31 m/s2. what is the tangential speed, v, of a point on the rim
if two masses m1 and m2 are confined to a circle and identical springs with spring constant k connect the masses find
A beanbag is thrown horizontally from a dorm room window a height h above the ground. find the direction of the beanbag's velocity
A series circuit consisting of an unchanged 2.0 µF capacitor and a 10-Mega ohms resistor is connected across a 100 Volt power source. Find the current in the circuit and the charge on the capacitor
Find the acceleration of the car and the tension of the string and the accelerations of the three blocks
A mass m is connected to the bottom of a vertical spring whose force constant is k. Attached to the bottomof the mass is a string that is connected to a second mass m, as shown in the figure.
1.00-kohm resistor, a 0.200-H inductor, and a 4.00-microF capacitor are connected in series with an AC generator; the EMF of the generator is given by (150 V)sin((377 rad/s)t). What is the amplitude of the resulting alternating current?
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