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A bridge 121.0 m long is constructed of steel having a coefficient of expansion of 11.1 × 10-6/K. If it is built as a single, continuous structure, by how many centimetres will its length change among the coldest days (-26.0°C) and the hottest summer day (40.0°C)?
A 5.5 g dart is fired into a block of wood with a mass of 22.6 g.The wood block is initially at rest on a 1.5 m tall post. After thecollision, the wood block and dart land 2.5 m. from the base of thepost. Find the initial speed of the dart.
When point charges q1 = +2.4 µC and q2 = +1.3 µC are brought near each other, each experiences a repulsive force of magnitude 0.39 N. Determine the distance between the charges.
An electric heater carries a current of 12.5 A when operating at a voltage of 3.60 102 V. What is the resistance of the heater
A ball of mass 8.9 g with a speed of 22.4 m/s strikes a wall at an angle 14.0o and then rebounds with the same speed and angle. find the magnitude of the impulse associated with the collision force
What isthe total random kinetic energy of all the molecules in one mole of helium at a temperature of360 K? With what speed would a mole of helium have to move so that the kinetic energy ofthe mass as a whole would be equal to the total random kineti..
The position of a particle moving along an x axis is given by x = 17t2 - 6.0t3, What is the maximum positive coordinate reached by the particle
Calculate the radius of its ground-state orbit, Calculate the energy of the electron in the ground state of double ionized lithium
A charge of 6.53mC is placed at each corner of a square .470 m on a side. Determine the direction of the force on each charge
In a nuclear power plant, the fuel rods last 3.00 year beforethey are replaced. what is the loss of mass of the fuel
illustrate with a diagram and develop brewsters law from snells law. use air as one medium at what angle of incidence
a 5.0 kg crate is transferred to a lower level by means of an 8 m long frictionless slide. the height of the top end
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
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