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A construct force vector F = 2.0i + 4.0j N acts on an object as it means along a straight- line path. If the object is displacement is d = 2.0i + 5.0j m calculate the work done by vector F using these alternate ways of writing the dot product.
(A) Calculate the work done by vector F using these alternative ways of writing the dot product W = Fdcos(theta).
(B) Calculate the work done by vector F using these alternate ways of writing the dot product W = F_x dx + F_y dy.
A 3.4-cm-diameter parallel-plate capacitor has a 1.8mm spacing. The electric field strength inside the capacitor is 1.3×105V/m, What is the potential difference across the capacitor
Two batteries of emf and internal resistance e1,2 and r1,2 are connected in parallel. Find the effective emf and internal resistance
A diffraction grating has 1380 lines/mm. You desire to detect two sodium lines at 589.0 nm and 589.6 nm with a detector. how far away should the dectector be placed from the grating
A string is 80.0 cm long and has a mass per unit length of 5.51 × 10-4 kg/m. The tension in the string is 200 N. In the fundamental mode, at what frequency does the string vibrate? Answer A) 376 Hz B) 450 Hz C) 598 Hz D) 702 Hz E) 964 Hz
A 1.0-cm-diameter microscope objective has a focal length of 2.8 mm . It is used in visible light with a wavelength of 550 nm. What is the objective's resolving power if used in air
Light travels at a constant speed of 3.0×108 m/s in a vacuum. (a) It takes light about 1.3 seconds to travel from the Earth to the Moon. Estimate the distance of the Moon from the Earth's surface, in meters.
Electrons are accelerated through a voltage difference of 265 kV inside a high voltage accelerator tube. What is the final kinetic energy of the electrons
A projectile is fired at an upward angle of 45° from the top of a 308m cliff with a speed of 198 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration of the woman
A train moving with constant velocity travels 190m north in 14s and an undetermined distance to the west. Find the direction of the train's motion relative to north
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
The isotope, tritium, has a half-life of 12.3 years. Assume we have 12 kg of the substance. How much tritium will be left after 26years? State your answer in kg ( two decimal places)
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