1. A projectile of mass 0.6 kg is fired vertically upwards in the barrel of a gun by a vertical net propelling force of 50 N acting over a period of 0.5 seconds. Calculate: (a) The velocity of the projectile when it leaves the gun. (b) The height reached by the projectile. (c) The time taken from the projectile leavin
1. Find an equation for the terminal velocity of a sphere falling through a viscous fluid (like water or blood). How does the terminal velocity scale with the size of the falling object? Assume that the density of that object is much larger than that of the fluid through which it falls (neglect buoyancy). a. V ~ L^-3 b. V
Physics questions involving work, force, distance, potential energy, kinetic energy, velocity, power, time, height, etc. etc..
Physical science (8th edition) by Bill W. Tillery Parallel Exercises 1. How much work is done when a force of 800.0 Ni s exerted while pushing a crate across a level floor for a distance of 1.5m? 2. A force of 400.0 N is exerted on a 1,250 N car while moving it a distance of 3.0 m. How much work was done on the car?
1. A 4.5 kg block is at rest on a table when it is attached to a second mass, m2 hanging over a pulley. The static coefficient of friction between the block and the table is 0.56 and kinetic coefficient is 0.42, respectively. The hanging mass, m2 is chosen to be 2.4 kg. a) Will this choice for m2 set the system in motion? b)
Hi, I need some assistance with the following questions: 1. A cannon ball is fired with a velocity of 48 m/s at 42 degrees up from the horizontal. Assume that it lands at the same level as it was fired from. a. Find the maximum height of the cannon ball. b. Find the total time the cannon ball is in the air. c. Find the
1. To qualify for the finals of a racing event, a race car must achieve an average speed of 220 km/h on a track with a total length of 2400 m. If a particular car covers the first 1000 m of the track with an average speed of 180 km/h, what minimum average speed must it have on the remainder of the track to qualify? 3. How lon
A 150-lb fireman is holding a hose which has a nozzle diameter of 1 inch and hose diameter of 2 inches. If the velocity of the water at discharge is 60 ft/s - determine the resultant normal and frictional force acting on the man's feet at the ground. (Neglect the weight of the hose and the water within it. yw = 62.4 lb/ft3).
1. Competitive divers pull their limbs in a curl up their bodies when they do flips. Just before entering the water, they fully extend their limbs to enter straight down. Explain the effect of both actions on their angular velocity. What is the effect of these actions on their angular momentum? 2. (A) Show that for a hoop of
A car brakes in an emergency, the moment the brakes are first applied is t=0. the car's distance, s, from the point at which the brakes were first applied is given by: S = -0.1t^3 + 20t + 0.1 (i) Differentiate s to find formulae for the velocity and acceleration. (ii) Find the time at which the car comes to a stop. (iii)
Please see the attached file for the problem statement, and provide a fully worked-out solution. In order to get an idea of the magnitude of magnetic forces, find the force per unit length between very long equal and opposite 10 ampere currents separated by 1 centimeter. Find the ratio of this to the weight per unit length of
Calculate the drift velocity of electrons in a copper wire given the current flowing in it, its diameter and density. A copper wire 2.5 millimeters in diameter is carrying a current of 10 amperes. Assume one free electron per copper atom and find the magnitude of the drift velocity. [Copper has a density of 8.92 grams/(cent
A dam to create a large fresh water lake is constructed. It will be approximately 14 meters deep. A horizontal pipe 1.2 meters long and 4 cm in diameter will pass through the dam at a depth of 7 meters to allow for release of the water in emergencies and for sampling. In normal situations, a plug will secure the pipe opening.
Two balls are thrown upward from the edge of a cliff with specified speeds at a time lag of 1 sec. Do the balls ever pass each other?
Two balls are thrown upward from the edge of a cliff in example 6 (see attachment). The first is thrown with a speed of 48 ft/s and the other is thrown a second later with a speed of 24 ft/sec. Do the balls ever pass each other?
A retarding force on a fallen object is given by: F = 0.5* c * rho * A * v^2 Where A is the cross sectional area c is a constant rho is air density v is teh verical velocity Three objects initially at rest are dropped from height of 100m. A baseball of mass 0.145 and radisu of 0.0366m A ping-pong ball of mass 0.002
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 240 km/h (66.7 m/s). (a) How far in advance of the recipients (horizontal distance) must the goods be dropped? (b) Suppose, instead, the plane releases the supplies a horiz
A ball is thrown 50 miles/hour at an angle of 60 degrees with respect to the horizontal. What is its velocity at its highest point?
A ball is thrown directly downward, with an initial speed of 8.50 m/s, from a height of 31.0 m. After what time interval does the ball strike the ground?
At t = 0, one toy car is set rolling on a straight track with initial position 13.0 cm, initial velocity -3.5 cm/s, and constant acceleration 2.50 cm/(s^2). At the same moment, another toy car is set rolling on an adjacent track with initial position 10.5 cm, an initial velocity of 6.10 cm/s, and constant zero acceleration. (a)
Please see the attached file for full problem description. 1.) A basketball player runs down the court, following the path indicated by the vectors A, B, and C in Figure 3-38. The magnitudes of these three vectors are: A = 10.0 m, B = 21.0 m, and C = 7.0 m. Let the +x axis point to the right and the +y axis point to the far s
The question ask to determine these in 3 different mediums: a vacuum and two different plasma's. The full question is attached.
1. Calculate the following. a. 100 ml of liquid A has a mass of 250 g. What is its density, in kg/L? (Note: 1 L = 1000 ml = 0.001 m3) b. Liquid B has a specific gravity of 0.98. How much does 1 L weigh, in an Earth-standard gravitational field? 2. The pipe shown above expands from an internal diameter of 3 cm to an
1. What max. initial velocity must a rocket have to reach a target 100 mi away? 2. At what two angles above the horizontal can a projectile be fired in order to reach a distance equal to half the maximum range?
A ball projected horizontally from a height of 50 ft. hits ground at a distance of 100 ft measured from the foot of the vertical structure. Find the velocity of projection.
Projectile Motions - A ball thrown into the air from the ground reaches a maximum height of 50ft and travels 200ft horizontally before it drops again to the ground. Find the magnitude and direction of the velocity with which it was thrown.
A ball thrown into the air from the ground reaches a maximum height of 50ft and travels 200ft horizontally before it drops again to the ground. Find the magnitude and direction of the velocity with which it was thrown.
A football is thrown with a velocity of 10 m/s at an angle of 30° above the horizontal. (a) What will the time of flight be? (b) How far away should its intended receiver be?
A toy rifle is fired at an angle of 60° above the horizontal. (a) If the pellet's initial velocity is 40ft/s, how far does it go? (b) What is the time of flight?
An airplane is in level at a velocity of 300 mi/h and an altitude of 5000 ft when it drops a bomb. (a) How long does the bomb take to reach the ground? (b) What will the bomb's velocity be on impact?
Please see the attached file.
Translational Motion - A ball has an initial velocity of 20ft/s and ground speed at the rate of 6.0ft/s² ...
A ball has an initial velocity of 20ft/s and ground speed at the rate of 6.0ft/s² a. What is the velocity at the end of the 5th second? b. What is the distance traveled during the 5th second?
A) A projectile is fired straight up at a speed of v0 at a latitude of (alpha) degrees. Show that in the time the projectile is airborne, it is deflected a distance of 4 v0*3 cos(alpha)/3 g^2 to the west. c) Show that for objects confined to land or for objects in which their net vertical acceleration is small in the inertial reference frame, such as storm systems, the maximum magnitude of the Coriolis force is at the north pole with a maximum magnitude of 2m* (Omega0)* v0, where v0 is the object's speed in the east-north direction, or another words along the ground. Thus, show even for fast moving objects with speeds of say 100 m/s, the ratio of the Coriolis acceleration=to that of g is approximately 0.15 percent.
A) A projectile is fired straight up at a speed of v0 at a latitude of (alpha) degrees. Show that in the time the projectile is airborne, it is deflected a distance of 4 v0*3 cos(alpha)/3 g^2 to the west. c) Show that for objects confined to land or for objects in which their net vertical acceleration is small in the inertia