A toque of 0.15 N middot m is applied to an egg beater. If the egg...
What is the magnitude of the angular momentum of a 1.0-g particle moving counterclockwise (as viewed from above) with an angular speed of 5 pi rad/s in a horizontal circle of radius 16 cm ? Express your answer using two significant figures. L = kg middot m^2/s What is the direction of the angular momentum upward downward
The uncertainty in an electron's position is 0.005 nm. What is the minimum uncertainty delta p in its momentum? Express your answer using two significant figures. delta p_min kg middot m/s What is the kinetic energy of an electron whose momentum is equal to this uncertainty (delta p = p)? Express your answer using two significant figures. K = 381.6 eV
dynamics
A force of P = 60 N is applied to the cable, which causes the 230-kg reel to turn since it is resting on the two rollers A and B of the dispenser, Neglect the mass of the rollers and the mass of the cable. Assume the radius of Gyration of the reel about its center axis remains constant at ko 0.6 m. (Figure 1) Part A Determine the angular velocity of the real measured clockwise, after it has...
A proton has velocity v=(1600± 0.15 )m/s . What is the uncertainty in its position? Express your answer using two significant figures.
The electric potential in a region of space is V = (250 V middot m)/squareroot x^2 + y^2, where x and y are in meters. Part A What is the strength of the electric field at (x, y) = (2.3 m, 1.8 m)? Express your answer using two significant figures. E = ______________ Part B What is the direction of the electric field at (x, y) = (2.3 m, 1.8 m)? Give the direction as an angle ccw from the...
A figure skater can increase her spin rotation rate from an initial rate of 1.0 rev every 1.2 s to a final rate of 2.0 rev/s . PART A If her initial moment of inertia was 4.9 kg⋅m2 , what is her final moment of inertia? Express your answer using two significant figures. PART B How does she physically accomplish this change? Q2 A person of mass 75 kg stands at the center of a rotating merry-go-round platform of radius...
As a train accelerates away from a station, it reaches a speed of 4.6 m/s in 5.2 s. If the train's acceleration remains constant, what is its speed after an additional 7.0 s has elapsed? Express your answer using two significant figures. 2) The position of a car as a function of time is given by x=(60m)+(−4.0m/s)t+(−8m/s2)t2. What is the initial position of the car? Express your answer to two significant figures and include appropriate units. 3)A model rocket rises...
What volume of each solution contains 0.15 mol of KCl? 0.220 M KCl Express your answer using two significant figures. 1.7 M KCl Express your answer using two significant figures. 0.835 M KCl Express your answer using two significant figures.
A wheel that is initially at rest has forces applied to it, as
shown in (Figure 1), and it begins to rotationally accelerate.Calculate the net torque about the axle of the wheel shown in
(Figure 1). Assume that a friction torque of 0.45 m⋅N opposes the
motion.Express your answer using two significant figures.
A person of mass 70-kg stands at the center of a rotating merry - go- round platform of radius 3.1 meter and the moment of inertia 900kg*m^2. The platform rotates without friction with angular velocity 0.85 rad/s. The person walk radially to the edge of the platform. Part A Calculate the angular velocity when the person reaches the edge. Express your answer using three significant figures and include the appropriate units. Part B Calculate the rotational kinetic energy of the...