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State the reasons why it is not correct to quote the weight of a solid object in kilograms
An oil drop of volume V m3 introduces on the surface of water spreads to form a patch whose area is A m2. Derive an expression for obtaining the diameter, d of a molecule of oil.
A police radar has an effective range of 1.5km, while a motorist's radar detector has a range of 2.0km. The motorist is going 150km/h in a 50km/h when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticket?
A film of MgF2 (n = 1.38) having thickness 1.68 10-5 cm is used to coat a camera lens. What are the three longest wavelengths that are intensified in the reflected light
A bathroom scale measures the normal force being exerted down on it. A box of mass 9.2kg sits on a bathroom scale that reads 6.2N. What is the tension (in Newtons) in the cable attached to the top of the box
A ball is kicked with an initial velocity of 16 m/s in the horizontal direction and 14 m/s in the vertical direction. What maximum height is attained by the ball
The speed of sound in air is 345 m/s. A tuning fork vibrates above the open end of a sound resonance tube. what is the frequency (in Hertz) of the tuning fork
a certain radioisotope has a half-life of 7.45 days. what percentage of an initial sample of this isotope remains after
A shower head has 20 circular openings, each with radius 0.80mm. The shower head is connected to a pipe with radius 1.0cm. what is its speed as it exits the shower-head openings
Visitors at a science museum are invited to sit in a chair to the right of a full-length diverging lens (f1 = -2.94 m), Find the overall magnification of the friend when viewed through both lenses
A 1200 kg safe is 2.5 m above a heavyduty spring when the rope holding the safe breaks. What is the spring constant of the spring
A spherical object with a moment of inertia of 0.482mr2 starts from rest rolling down a 3.14-m high incline. what is its linear speed at the bottom of the incline
a composite slab with dimensions d1 = 10.8 cm, d2 = 3.00 cm, and d3 = 14.0 cm. What are the coordinates of the center of mass of the slab
What is the final temperature of the water?
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