An electron has a momentum py = 2.10 × 10 − 25 kg.m/s. What is the minimum uncertainty in its position that will keep the relative uncertainty in its momentum (Δpy/p) below 2.5%?
At the Fermilab accelerator in Batavia, Illinois, protons having momentum 4.40 x 10-10 kg.m/s are held in a circular orbit of radius 1.80 km by an upward magnetic field. What is the magnitude of this field?
As an orange falls vertically downward, its momentum changes by 2.4 kg.m/s per second. a) What is the weight of the orange? b) How much time does it take for the orange's momentum to change by 6.1 kg.m/s?
A charge of -7.08 μC is traveling at a speed of 8.44 × 106 m/s in a region of space where there is a magnetic field. The angle between the velocity of the charge and the field is 51.2o. A force of magnitude6.45 × 10-3 N acts on the charge. What is the magnitude of the magnetic field?
QUESTION 6 Determine the linear momentum of a 2,800 kg houseboat going 3 m/s. 9,100 kg.m/s 7,200 kg.m/s 8,400 kg.m/s 9,800 kg.m/s QUESTION 7 A ten-lb. sledge hammer is dropped from a height of 48 feet on a four-story building construction site. What is its potential energy just as it is starting to fall? 638 J 594 J 650 J 680 J
The acoustic impedance of the matching layer is 14 x 106 kg.m -2 .s -1 Material Speed of Sound m .s -1 Density kg.m -3 Soft Tissue 1540 1060 PZT 3850 7600 c)Calculate the improvement in transmission from PZT to tissue due to the matching layer.
How many moles of HNO3 are formed from 8.44 moles of NO2?
(a) Calculate the angular momentum (in kg.m/5) of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.370 kg.m. kg-m/s (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kg-m2) if his angular velocity drops to 1.70 rev/s. kg.m (c) Suppose instead he keeps his arms in and allows friction with the ice to slow him...
10-78 A centrifuge of moment of inertia 2.25 x 102 kg.m' rotating at 2.50 X 10 rpm is brought to rest by a constant frictional torque of magnitude 2.31 N.m. (a) What is the angular acceleration of the (b) How long does it take to come to rest? (c) How many revolutions does it make in coming to rest? centrifuge?
Problem No-3: Air at 20 c(p-1.21kg/mH-38x107 kg.m/s) and with a free stream velocity o 40 m/s flows past a smooth thin plate which is 3-m wide and 10-m long in the flow direction. turbulent boundary layer from the leading edge determine: (a) the boundary layer thickness 6 m from the leading edge (b) the drag coefficient and drag force exerted by the fluid on the thin plate Take density 1.2 kg/m3 and kinematic viscosity as 1.49 x 10-s m'/s: (12p)...