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An artillery SHELL is fired with an initial velocity of 300m/s at 55.0degree above the horizontal.To clear an avalanche,it explodes on a mountainside 42.0s after firing.What are the x- and y-coordin
The distance between a loudspeaker and the left ear of a listener is 2.70 m. How long would it take for sound to travel this distance if the air temperature is 20 degrees C.
Then (separately) to sphere A, and then it is removed. What is the ratio of the electrostatic force between A and B at the end of experiment 2 to that t end of experiment 1?"
An 9.00 point mass and a 14.5 point mass are held in place 50.0 apart. A particle of mass is released from a point between the two masses 18.0 from the 9.00 mass along the line connecting the two fi
A flea pulls on a puck with force 9 microN at an angle of 90?. Another flea pulls on the puck with force 1 microN at an angle of -15. What is the magnitude of the net force on the puck?
Label each structure and show the movement of electrons and hydrogens in order to produce ATP.
What is the equilibrium constant if the initial concentration of fructose 6-phosphate is 3 M?
When an 83.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.10 x 103 J. By how much does the potential energy of a 15.0
What distance differs from 100 m and from 1000 m by equal factors, so that we could equally well choose to represent its order of magnitude either as ~ 102 m or as ~ 103 m?
What distance do the trains need to allow between them to stop at this acceleration? What acceleration do the two trains need to have to stop exactly in a distance of 711 m?
A 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57.0 . A 22.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a fricti
You toss a ball straight up with an initial velocity of 27.5m/s. a) How high does the ball travel? It goes up and then falls to the ground below. B) How much time is it in the air?
A plane flies at an airspeed of 231 km/h. A wind is blowing at 76 km/h toward the direction 60° east of north. In what direction should the plane head in order to fly due north relative to
A summer-squash plant that produces disc-shaped fruit is crossed with summer-squash plant that produces long fruit
The ball is launched at an angle of 51 degrees above the ground. Determine the horizontal and vertical components of the launch velocity.
It is observed that the two fragments hit the ground at the same time. What is the distance between the points on the ground where they land? Assume that the ground is level and air resistance can b
an empty sled of mass 25kg slides down a muddy hill with a constant speed of 2.4 m/s. the slope of the hill is inclined at an angle of 15 degrees with the horizontal. calculate the time it takes the
What must be the minimum initial speed of the dart so that the combination makes a complete circular loop after the collision?
What are the angles between the negative direction of the y axis and (a) the direction of A, (b) the direction of the product A × B, and (c) the direction of A × (B + 3.00k)?
A 4.0 kg mass is hung from a string which is wrapped around a cylindrical pulley (a cylindrical shell). If the mass accelerates downward at 4.90 m/s2, what is the mass of the pulley?
The initial concentration of fructose 6-phosphate is 3 M?
The horizontal and has a tension of 158 Newtons, while Rope 2 is at an angle of 59.0 degrees to the horizontal. Calculate the vertical component of the tension in Rope 2.
A block of wood half as dense as water floats with half its volume above water. A piece of iron is then tied on top so the wood floats with only 1/4 its volume above the surface. If the wood and ir
Find the fraction of incident unpolarized light intensity transmitted by the three-sheet combination. (Assume each polarizing sheet is ideal.)
This procedure has actually been used to "weigh" astronauts in space. A 42.5-rm kg chair is attached to a spring and allowed to oscillate. When it is empty the chair takes 1.30 rm s to make one comp