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If 400g of water at 30 C is poured over a 60g cube of ice with a temperature of -5 C. Does all the ice melt? If so, what is the final temperature of the water? If not, how much ice remains when the mixture reaches equilibrium.
Standing at the edge of a cliff 33.5 m high, you drop a ball. Later, you throw a second ball downward with an initial speed of 12.7 m/s. What is the increase in speed of the second ball
A solar powered robotic airplane to explore the Martian atmosphere has wings, each with area 10.0 m2, designed so that air flows over the top of the wing at 245 m/s and underneath the wing at 222 m/s. Determine what mass of plane will this lift sup..
A plane, diving with constant speed at an angle of 54.0° with the vertical, releases a projectile at an altitude of 890 m. The projectile hits the ground 6.00 s after release. What is the speed of the aircraft
How long does it take the crate to hit the ground. suppose that the plane continues to fly with the same velocity.
A point on the rim of a 0.25-m-radius rotating wheel has a centripetal acceleration of 4.0 m/s^2. What is the angular speed of the wheel
A small, 200 kg cart is moving at 1.50 m/s on an air track when it collides with a larger, 1.00 kg cart at rest. What is the speed of the large cart after the collision
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 11 state
An electron microscope is using a 1.00 keV electron beam. An atom has a diameter of about 10-10 m. Find the wavelength of electrons in this microscope
A magnetic fields pulls on an electron with 8.6 mN of force in the + X direction while an electric filed pulls with 5.2 mN of force in the - Y direction. Find the resulting force vector on the electron in (r, θ) form
if a curve with a radius of 74m is perfectly banked for a car traveling 71kmh what must be the coefficient of static
The observed frequency of a train whistle is 475Hz as it approaches a stationary observer and is 410Hz as it recedes
A 5.0-, 0.732- wire is used to support two uniform 235- posts of equal length, What is the frequency of the sound this wire produces
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