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When a high-speed passenger train traveling at 170 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 601
A centrifuge in a medical laboratory rotates at an angular speed of 3650 rev/min. When switched off, it rotates through 52.0 revolutions before coming to rest. Find the constant angular acceleratio
A building 25m away at a point of 16m above the point of projection. Find the magnite and the direction of the velocity of the projectile as it strike the building.
Calculate the net torque about this axis due to the three forces shown in the figure if the magnitudes of the forces are F_1 = 18.0 {rm N} , F_2 = 16.1 {rm N}, and F_3 = 15.2 {rm N} . The plate and
If the output diameter of each head is 3.0 mm, how many liters of water do the four heads deliver per second?(c) How fast is the water flowing inside the 1.9 cm diameter pipe?
A cart of mass 6.8 kg is moving with a velocity of 15.2 m/s. It makes a head-on perfectly inelastic collision with a stationary cart B with mass 6.4 kg causing them to travel with a velocity 7.63 m
If the plane is frictionless, what is the speed v, of the center of mass of the sphere at the bottom of the incline?
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 25 km/h and the coefficient of static friction between tires and track is 0.22?
Determine the escape speed from Jupiter's moon Callisto, with mass 1.07*10^23 and radius 2.40, (b)and a neutron star, with the Sun's mass crammed into a sphere with radius 5.90 km
An 80 000 kg airliner is flying at 900 km/h at a height of 10 km. What is its mechanical energy if the potential enrgy is 0 when the airliner was at rest on the ground?
What must the charge (sign and magnitude) of a 1.50-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 610?
If a sound wave that is traveling in air approaches a flat water surface with an angle of incidence of 11.9?, what is the angle of refraction?
The force of friction between the moving box and the floor has magnitude 41.5. What is the box's acceleration just after it begins to move? Find both the x and y components of the acceleration of th
A 1500-kg car moving east at 26 m/s collides with a 1720-kg car moving south at 15 m/s and the two cars stick together. What is the velocity of the cars right after the collision?
Sally travels by car from one city to another. She drives for 29.0 min at 64.0 km/h, 37.0 min at 42.0 km/h, and 23.0 min at 30.0 km/h, and she spends 13.0 min eating lunch and buying gas. a) Determi
Find the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. Suppose that a certain set, the electron
A cowboy at a dude ranch fills a horse trough that is 1.2m long, 67cm wide, and 44cm deep. He uses a 2.5cm diameter hose from which water emerges at 2.5m/s. How long does it take him to fill the tr
An electron accelerated from rest through a voltage of 420 V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 18 cm, what is the magnitude of the
Determine the escape speed from (a) Jupiter's moon Callisto, with mass and radius 2.40 , and (b) a neutron star, with the Sun's mass crammed into a sphere with radius 5.50.
An applied force stretches the combination by d = 1.8 mm. How far does the point where the two wires meet move?
The mass of a proton at rest is m. If the proton is moving so fast that its total energy is three times its rest energy, then what is the kinetic energy of the proton?
A metal tank with volume 3.10 L will burst if the pressure of the gas it contains exceeds 100 atm. Is it reasonable to ignore the thermal expansion of the tank? Explain?
Consider a +2.0x10^-6C charge on the y-axis at y=5m and a -4.0x10^-6C charge on the x-axis at x=4m. What is the potential at the origin relative to V=0 at infinity is, in volts?
When the frequency of the generator is 25.0 kHz, the rms current is 87.2 mA. What is the capacitance or inductance of the unknown component in the box?