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Q1. An electron is a subatomic particle (m = 9.11 × 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from the initial velocity of +5.40 × 10^5 m/s to a final velocity of +2.10 × 10^6 m/s while travelling a distance of 0.038 m. The electron's acceleration is due to two electric forces parallel to the x axis: and, which points in the -x direction. Find the magnitudes of (a) net force acting on the electron and (b) electric force.
Q2. A 203 rad dose of radiation is administered to a patient in an effort to combat a cancerous growth. Suppose that all of the energy deposited is absorbed by the growth.
(a) Calculate the amount of energy delivered per unit mass.
(b) Assuming the growth has a mass of 0.25 kg and a specific heat equal to that of water, work out its temperature rise.
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
Eight lights are connected in parallel to a 116 V source by two leads of total resistance 1.1. If 240 mA flows through each bulb, what is the resistance of each? What fraction of the total power is wasted in leads.
Estimate the acceleration of cyclist, and roller coaster.
A 4.20 kg model rocket is launched, expelling 57.0 g of burned fuel from its exhaust at a speed of 675 m/s. What is the velocity of the rocket after fuel has burned.
Two identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket.
Assume that it takes 2.30 kg of oxygen to burn 1.00 kg of coal. (The actual amount varies with the type of the coal). What is the total mass of the reagents used in the combustion all through the 30 days.
Calculate the discharge in cubic meters per second and in cubic feet per second if A pipe with 2m diameter carries water having a velocity of 4 m/s.
A machinist starts with three identical square plates but cuts one corner from one of them, two corners from the second, and three corners from the third. Rank the 3 plates according to the x coordinate of their center of mass, from smallest to large..
What is velocity of the boat relative to the shore
Displacement d2 is in the xz plane 30° from the positive direction of the x axis, has a positive z component, and has magnitude 1.10 m.
A 60.0 kg pole vaulter running at 12.0 m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?
A conducting rectangular loop of mass M, resistance R, and dimensions w by l falls from rest into a magnetic field. All through the time interval before the top edge of the loop reaches the field, the loop approaches a terminal speed vT.
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