Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
In shot putting, several athletes elect to launch the shot at an angle that is smaller than the theoretical one (about 42 degree) at which the distance of a projected ball at the same speed and height is greatest. One reason has to do with the speed the athlete can give the shot during the acceleration phase of the throw. Suppose that a 7.28 kilogram shot is accelerated along a straight path of length 1.49 meter by a constant applied force of magnitude 410 Newton, starting with an initial speed of 2.4 m/s (due to the athlete's preliminary motion). Find the shot's speed at the end of the acceleration phase if the angle between the path and the horizontal is
(a) 35 degree and
(b) 42 degree? (Hint: Treat the motion as though it were along a ramp at the given angle.)
(c) Find by what percent is the launch speed decreased if the athlete increases the angle from 35 degree to 42 degree?
A 4.30-kg ball is dropped from a height of 14.5m above one end of a uniform bar that pivots at its center. The bar has mass 6.50kg and is 4.60m in length. At the other end of the bar sits another 6.00-kg ball, unattached to the bar. The dropped ball ..
When an automobile moves with constant speed down a highway, estimate the total frictional force acting on the car
The density of air under standard laboratory conditions is 1.29{\rm kg}/{\rm m}^{3} , and about 20.0\% of that air consists of oxygen. Typically, people breathe about .5 L of air per breath.
A 49.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
A 4.0 kilogram mass has a velocity of 4 m/s , east when it explodes into two 2 kilogram masses. Find the magnitude of the velocity of the other mass after the explosion
A 500kg pig is standing at the top of a muddy hill on a rainy day. What is the pig's speed at the bttom of the hill
A model of a helicopter rotor has four blades, each3.10 m in length from the centralshaft to the blade tip. What is the linear speed of the blade tip
a baseball player hits a triple and ends up on third base. a baseball diamond is a square each side of length 29 m with
ou place it in water and it displaces a volume of 20 cubic centimeters of water. What is the hardness of this mineral? describe your answer.
Two long parallel wires carry currents of 3.71 A and 6.47 A. The magnitude of the force per unit lengh acting on each wire is 6.85 × 10-5 N/m
The potential difference between the accelerating plates of a TV set is about 25 kV. If the distance between the plates is 1.5 cm, find the magnitude of the uniform electric field in the region between the plates.
A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.90 rev/s. The disk rotates through 4.50 revolutions before coming to rest. What is the tangential acceleration of a point on the disk 2..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd