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What is the speed of the sword spearing the fish if the swords initial velocity is 6m/s?
A single conducting loop of wire has an area of 8.9 x 10-4 m2 and a resistance of 110 O. Perpendicular to the plane of the loop is a magnetic field of strength 0.18 T. At what rate (in T/s) must this
The half - life of iridium- 131 eight days. atom by atom, itdecays into an isotope of iodine. How much of 24 grams of iridium will be left after 24 days?
Block 1 of mass m1 slides along a frictionless floor and into a one-dimensional elastic collision with a stationary block 2 of mass m2 = 3m1. Prior to the collision, the center of mass of the two-bl
What is a stronger acid, phenol or 4 nitrophenol? Briefly explain. If possible please explain what and waht does not make substituted benzene acidic.
A sample of nitrogen has a volume of 4.22 L at 1,941 mmHg and170 °C. What volume will it occupy at standard temperature and pressure?
Table sugar (sucrose, C12H22O11) and table salt (NaCl) are both crystalline, colorless solids which are similar in outward appearance. You are given 100 grams of a mixture of these two solids. You d
A stationary particle(q = 2.8e-8 C) is placed in a laser beam(electromagnetic wave) whose intensity is 2.2e3 W/m^2. Determine the magnitude of the (a) Electric and (b) Magnetic forces exerted on the
Describe the changes (if any) in potential energy and in kinetic energy among the molecules when gaseous PCl3 condenses to a liquid at a fixed temperature.
For each statement below, select weather that statement describes an electric field, a magnetic field, both and electric and a magnetic field, or neither. (Note each answer is used once.) 1. The fi
In the study of a second-order gas-phase reaction, it was found that the concentration of a reactant fell from .220molL-1 to .056mol L-1 in 1.22x104s.What is the rate constant of this reacti
As the frequency of the oscillator is varied over the range 500-1500 Hz , the wire is observed to set into oscillation only at frequency 860 Hz to 1290 Hz. What is the linear density of the wire??
What are the magnitudes of (a) the angular velocity, (b) the radial acceleration, and (c) the tangential acceleration of a spaceship taking a circular turn of radius 3220 km at a speed of 29000 km/h
Explain the situation where the Jones Reagent (CrO3& H2SO4) test might give a false negative for some alcohols. Use mechanisms if needed.
a. A planet of mass m is in a circular orbit around a star of mass M. The radius of the orbit is R. The force of gravity is defined as G. What is the speed of the planet with respect to the given v
Two long straight parallel wires are oriented in a north-south direction at the same height, 50.0 cm apart, and carrying currents of 8.00 A in opposite directions.
The coefficient of kinetic friction between the crate and floor is 0.25. a) What magnitude of force must the worker apply to move the crate at constant velocity?
What is the total pressure in mm Hg of a sample of gas that contains the following gases: O2(45 mmHg), N2 (1.20atm), and He (825mm Hg)?
A mobile at an art museum has a 2.0 kg steel cat and a 4.0 kg steel dog suspended from a lightweight cable. It is found that theta one is equal to twenty degrees when the center rope is adjusted to
The potential energy of a mass m in a certain region varies as: U(x) = (13x2 + 39x-70)(Joules) . The total mechanical energy of the mass is constant = 60 (Joules). A. To what region of the x-axis is t
A car engine is rated at 148 horsepower (110kW). If the resistive forces acting on the car vary with the car's speed v as F(res)= Av^2 where A = 1.69Ns^2(m-2) , Estimate the maximum speed in mph att
A force is represented by a vector: from F= ˆi (3xy) - ˆj (2x^2(y)) . Calculate the work done by this force in a displacement from the origin (0,0) to (the point (5, 10) along the following
Calculate the work done by this force in a displacement from the origin (0,0) to (the point (5, 10) along the following paths:
A student is interested in the half-life of enzyme X. She injectsrats with a particular 14C-labeled amino acid and later isolatesher enzyme of interest. When she first isolates enzyme X she findsit