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A car traveling 53.9 km/h is 23.7 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.57 s later.
(a) What is the car's constant deceleration magnitude before impact?
(b) How fast is the car traveling at impact?
If i have a hollow copper sphere that has an outer diameter of 20.00 cm that is floating so that everything is just submerged in a bucket of water
A body of mass 2.60 kg moves along the x-axis, and its motion is described by the equation x = 7 sin (24 t + 2), where x is in m and t is in s. Find the resultant force on the body at t = 0.100 s
It takes 2.30ms for the current in an LR circuit to increase from zero to 0.71 its maximum value, Determine the time constant of the circuit
A block of ice of mass 100 g and at 00 C is dropped into 500 g of water at 800 C in a Styrofoam cup. describe the process of each heat loss or gain
The truncated form of the virial equation is P(VB) = RT , where B is a constant that depends only on temperature. Derive the expression for reversible isothermal work for a gas that obeys this equation of state.
A cowboy stands on horizontal ground between two parallel vertical cliffs. He is not midway between the cliffs. What is the distance between the cliffs
The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. compute the final magnification of the microscope
The cheetah is one of the fastest accelerating animals, for it can go from rest to 26.8 m/s in 3.89 s. determine the average power developed by the cheetah during the acceleration phase of its motion
For the circuit shown in the following figure both meters are idealized, the battery has no appreciable internal resistance, and the ammeter reads 1.19 A. What does the voltmeter read
A sound wave traveling at 340 m/s is emitted by the foghorn of a tugboat. An echo is heard 2.60 s later. How far away is the reflecting object? reply in units of m.
A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 450 grams (0.45 kg), at the ends of a very low mass rod of length d = 35 cm, calculate the total kinetic energy of the barbell
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
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