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This question has 2 parts. Each part is worth 4 points.
A projectile is launched from ground level. The magnitude of the velocity is 14 m/s. The maximum height that the projectile reaches is 7 m above the ground.
a) Find the direction of the initial velocity vector. Express as an angle relative to the horizontal.
b) Find the total x displacement.
A copper weight is placed on top of a 0.23 kg block of wood (density = 0.60 x10^3 kg/m3) floating in water. What is the mass of the copper
The hour, minute, and secondhands on a clock are 0.25 , 0.31 , and 0.37 long,respectively. What are the distances traveled by the tips of the hands in a 45 interval
Sharon is standing on a giant skateboard that is initially at rest. If we ignore frictional effects with the floor, what is the momentum of the skateboard if Sharon walks to the right with a momentum of 1000 kg*m/s?
Find the expression for the electric field, E? , of the ring as the point P becomes very far from the ring (x >> R) in terms of the radius R
an equeous solution contaning 0.003 M NaCl and 0.005 M CaCl2 is mixed with the polysacharide alingate to creat aahigh- viscosity liquid, calculate the activity coefficient of all ionic species at 25 C
A hawk flies in a horizontal arc of radius 14 m at a constant speed of 5 m/s. (a) Find out its centripetal acceleration. (b) It continues loftly along the same horizontal arc but increases its speed at the rate of 1 m/s2. Find out the acceleration..
To simulate the effect of an earthquake on a rigid building, the base is assumed to be connected to the ground through two springs.
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
A certain digital camera having a lens with focal length 7.50cm focuses on an object 1.90m tall that is 4.70m from the lens. How far must the lens be from the photocells
A rifle with a weight of 40 N fires a 4.5-g bullet with a speed of 230 m/s. Find the recoil speed of the rifle
A spring with spring constant 11.9N/m hangs from the ceiling. A ball is suspended from the spring and allowed to come to rest. It is then pulled down 11.0 cm and released. The ball makes 38.0 oscillations in 19.0 seconds.
A firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady speed of 2.9 m/s. How much work has been done on the hose by the applied force
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