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Question: A wire 3.00 m long and 0.450 mm2 in cross-sectional area have a resistance of 39 at 20°C. If its resistance increases to 39.7 Ω at 26.0°C,
Question 1: What is the temperature coefficient of resistivity?
I want help to find the temperature coefficient of resistivity.
A 3.0 kg particle with velocityv = (5.0 m/s) i - (6.0 m/s) j is at x =3.0 m, y = 8.0 m. It is pulled by a 7.0 N force in the negative x direction. find the angular momentum of the particle about the origin
A 3.20-kN piano is lifted by three workers at a constant speed to an apartment 21.8 m above the street using a pulley system fastened to the roof of the building. Find the time required to lift the piano
A 675 kilogram elevator starts from rest and moves upward for 3.40 second with constant acceleration until it reaches its cruising speed, 1.65 m/s. Find the average power of the elevator motor during this period
A simple pendulum of length 2.00 m is made with a mass of 2.00 kg. What is the speed of the mass when the pendulum is 45(degree) above its lowest position
A person holds a 2.0-kg carton of milk at armslength. If the biceps muscle is attached to the forearm at a point8 cm from the elbow joint, what force must be exerted by the muscle
a projectile is fired from a submarine traveling horizontally at 20 ms with respect to the water as shown in the figure
At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm, how much force will be required to rupture it
A plane, diving with constant speed at an angle of 53.0degrees with the vertical, releases a projectile at an altitude of730 m. how far does the projectile travel horizontally during its flight
Dr. Evil runs out to his car which is parked at the bottom of a hill that is inclined with the horizontal at 20° and blasts up the hill with an acceleration of 6 m/s2. how much time must James wait before firing the mortar
An electron in a conjugated hydrocarbon is confined to an effective distance of 8.27 Å. calculate the minimum uncertainty in the speed of the electron
Hail comes straight down at a mass rate of m/%u0394t = 0.030 kg/s and an initial velocity of v0 = -10 m/s, calculate the force exerted by the hail on the roof
an alpha particle m 6.68times10-27 kg q 3.20times10-19 c circularly orbits a charged sphere at a radius of 5.00 cm
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