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Question1
A hiker makes four straight-line walks A 20 km at 274o B 12km at 48o C 33 km at 150o D 30km at 20o in random directions and lengths starting at position (41 km, 41 km) How far from the starting point is the hiker after these four legs of the hike? All angles are measured in a counter-clockwise direction from the positive x-axis.
Question2
Suppose your hair grows at the rate of 1/32inche per day. Find the rate at which it grows in nanometers per second. Because the distance between atom in moleclule is on the order of 0.1nm, your answer propose how rapidly atom are assembled in this protein synthesis
assume four objects each of mass m are placed at the corners of a square os side length, How much work is needed to separate the planets
A positively charged particle of mass 6.20 multiply.gif 10-8 kg is traveling due east with a speed of 50 m/s, What is the magnitude of the magnetic force acting on the particle
Find the magnification of the heater element given that the mirror has a radius curvature of 46 cm and produces an image of the coils 2.6m away from the mirror
A 3.6- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 255 rad/s2, How long is the plane
The temperature inside the refrigerator is 2.0 °C. It stands in a kitchen whose temperature is 22 °C, what is the entropy change of the kitchen
A steel guitar string 50 cm long has a mass density of 1.5 g/m and the tension is 500 N. Find the frequency of the second harmonic
A horizontal force of 250 N is applied to a stationary wooden box in one direction, What additional force is needed for the box to remain stationary
After reaching its maximum height, the ball moves into the hoop on its downward path, at 3.05 m above the ground. Using the principle of energy conservation,
a crowbar is used to lift a weight. If a down ward force of 224 N is applied to the end of the bar, how much weight does the other end bear
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
How much heat would flow by the glass in 1.00 h if there is a temperature difference of 3^circ {rm C} between the inner and outer surfaces.
A horizontal vinyl record of mass 0.10kg and radius 0.10 m rotates freely about a vertical axis through its center with a rotational speed of 5.10 rad/s.
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