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When lead is melted at atmospheric pressure, the melting point is 600 K, the density decreases from 11.01 to 10.65 g/cm3, and the latent heat of fusion ?H is 24.5 Jig.
What is the melting point at the pressure of 1.01 x 107Pa?
A 15 kg block is accelerated at 1.7 m/s2 up a frictionless plane inclined at 5.0° to the horizontal, with the speed increasing from 10 m/s to 35 m/s. What is the average rate at which energy is transferred to the block
A small, 2.10 g plastic ball is suspended by a 20.0 cm long string in a uniform electric field E = 5.60×103 i N/C, If the ball is in equilibrium when the string makes a 15.0o angle with the vertical
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
Two metal spheres are separated by a distance of 0.8 cm and a power supply maintains a constant potential difference of 770 V between them. what is the distance between the spheres at this time
A 190 pF capacitor is charged to a potential difference of 120 V, and the charging battery is disconnected. The capacitor is then connected in parallel with a second (initially uncharged) capacitor. If the measured potential difference drops to 100 V..
A van turns in a circle in an empty parking lot. The speed that the van is moving is 15 m/s. Determine how many meters is the minimum radius of the circle
You toss a ball straight up. When it leaves your hand, it is 1.5 meter above the ground. Compute how fast was it going when it left your hand
A 75 kg man weighs 735 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose"12% of his body weight
Give an expression for the electric field very far from the ring, when z0>>R. Write this expression in terms of the Coulomb constant k, the charge density l,the distance z0,and the radius R.
An 8.00 kilogram mass moving east at 14.4 m/s on a frictionless horizontal surface collides with a 10.0 kilogram object that is initially at rest. Find what percentage of the initial kinetic energy is lost in the collision
How fast must the bat fly, v_b, to hear a beat frequency of 205 rm {Hz}.
Two high-current transmission lines carry currents of 25.0A and 75.0A in the same direction and are suspended parallel to each other 45.0cm apart. what magnetic force does each segment exert on the other
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