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Police investigators, examining the scene of an accident involving two vans, measure 72 meter long skid marks of one of the vans, which nearly came to a stop before colliding. The coefficient of kinetic friction between rubber and the pavement is about 0.80.
Find the initial speed of that car assuming a level road.
A wheel rotating about a fixed axis through its center has a constant angular acceleration of 4 rad/s^2. In cerain 4s interval the wheel turns through an angle of 80 rads.
Egg incubation is an important determinant of the sex of many reptiles. In a study of loggerhead turtles 100% of the hatchings from eggs incubated at 26°C were male, while 100% of those from eggs incubated at 32°C were female.
a nearsighted person wearing identical contact lenses has a corrected range of clear vision from 20.8 cm near point to
A pair of slits, separated by 0.200mm, is illuminated by light having a wavelength ofλ = 592 nm. Aninterference pattern is observed on a screen 130 cm from the slits. Consider a point on the screen located at y = 1.90 cmfrom the central maximum of th..
In a ballistics test, a 22.0g bullet traveling horizontally at 1300m/s goes through a 30.0cm -thick 350kg stationary target and emerges with a speed of 900m/s, How long is the bullet in the target
Force F = (3.0 N) + (-9.0 N) acts on a pebble with position vector r = (1.00 m) + (-1.6 m) , relative to the origin. What is the resulting torque acting on the pebble
If a silver wire has a resistance of 13.0 Ω at 20.0°C, what resistance does it have at 37.0°C? Neglect any change in length or cross-sectional area resulting from the change in temperature.
An airplane is to drop an abject to hit a target on the ground. The plane is flying at a constant speed of 300 km/h horizontally, How far in advance should the object be let go in order for it to reach the target
A 27.0 g copper ring at 0°C has an inner diameter of D = 3.04591 cm. A hollow aluminum sphere at 87.0°C has a diameter of d = 3.05180 cm. What is the mass of the sphere
as a 15000 kg jet plane lands on an aircraft carrier its tail hook snags a cable to slow it down. the cable is attached
A student was given two forces and asked to find a single force that would produce equilibrium with the two forces. The two forces were given by providing one of the components and the angle the force made with the positive x axis. The two forces ..
If a real object is placed inside the focal point of a diverging lens,
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