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The local acceleration due to gravity. What is the rocket's maximum altitude (in km)? How long (in seconds) is the rocket in the air before hitting the ground?
A 50 {rm g} mass hangs from one edge of the loop. What magnetic field strength will prevent the loop from rotating about the axle?
A race car has a mass of 700 kg. It starts from rest and travels 42.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?
Which of the following describes erosion?
A train accelerates away from station, it reaches a speed of 4.7m/s in 5.0 s. if the train acceleration is copnstant, what is its speed after additional 6 s has elapsed?
An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. (a) What is the i
A street lamp weighs 159 N. It is supported equally by two wires that form an angle of 102? with each other. What is the tension of each of these wires?
A 200 {rm kg} weather rocket is loaded with 100 {rm kg} of fuel and fired straight up. It accelerates upward at 34 {rm m/s^2} for 32 s, then runs out of fuel. Ignore any air resistance effects
After the collision, the pin flies forward (in the positive x direction) with a velocity of 7.3 m/s, and the ball continues forward at 3.2 m/s (in the positive x direction). What was the original ve
On a safari, you are spear fishing while wading in a river. You observe a fish gliding by you. If your line of sight to the fish is 68.0° below the horizontal in air,
All three are pushed forward by a 19 N force applied to the 7.0kg block. How much force does the 8.0 block exert on the 9.0 block?
A cube of ice is taken from the freezer at -8.5°C and placed in a 75-gram aluminum calorimeter filled with 300.0 grams of water at room temperature of 20.0°C. The final situation
What is the maximum length of a steel cable that can be lowered into a mine? Assume that the magnitude of the acceleration due to gravity remains constant at 9.8 meters per second per second.
Draw the forces acting on your roommate the instant before slippage. Include a coordinate system. You know the values of m, g, r, and v.
The temperature of the shell is 400 K. The net heat current radiated, including direction, in the space between the sphere and the shell, in kW, is closest to:
The bullet fully embeds itself in the block before the bullet-block system launches off the table. How far in the x-direction will the block-bullet system travel before striking the ground?
A horizontal uniform bar of mass 2.7 kg and length 3.0 m is hung horizontally on two vertical strings. String 1 is attached to the end of the bar, and string 2 is attached a distance 0.7 m from the
A plane is flying due west at 275 km/h and encounters a wind from the west at 80 km/h. What is the plane's new velocity with respect to the ground in standard position?
Solve the linear differential equation by separation of variables to obtain a formula for the current growth in an RL-circuit.
a very a vibrating guitar string emits a tone simultaneously with one from a 535 hz turning fork. if a beat frequency of 4.5 hz results, what is the frequency of vibration of the string?
A firefighter of mass 75 kg slides down a vertical pole with an acceleration of 3 m/s2. The acceleration of gravity is 10 m/s2 . What is the friction force that acts on him?
An electron is accelerated from rest by a potential difference of 358 V. It then enters a uniform magnetic field 281 mT with its velocity perpendicular to the field. Calculate the radius of its pat
A 50 g ice cube floats in 195 g of water in a 100 g copper cup; all are at a temperature of 0°C. A piece of lead at 98°C is dropped into the cup, and the final equilibrium temperature is 12
A 5.0 g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of the rifle?
Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m, respectively. If q = -40 pC and Q = +30 pC, determine the net flux through a spherical surface (radius = 1.0 m) centered on the orig