-
Write an expression for a harmonic wave that has an amplitude of 18 cm, a wavelength of 2.0 m, an d propagates to t he left a t 15 m/s.
-
10. A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which, initially, is at rest. Because of the collision, A is deflected an
$15.00
Physics
Waiting for answer
-
What should be the length l of the clapper rod for the bell to ring silently-that is, for the period of oscillation for the bell to equal that for the clapper? express your answer using two significan
-
Two vectors are given by a overscript right-arrow endscripts equals 6.1 i overscript Ì endscripts plus 8.7 j overscript Ì endscripts and b overscript right-arrow endscripts equals 6.3 i overscript
$20.00
Physics
Waiting for answer
-
The rigid beam is supported by a pin at a and wires bd and ce. if the load p on the beam causes the end c to be displaced 15 mm downward, determine the normal strain developed in wires bd and ce.
$12.00
Physics
Waiting for answer
-
A woman walks due west on the deck of a ship at 3 mi/h. the ship is moving north at a speed of 23 mi/h. find the speed and direction of the woman relative to the surface of the water. (round your answ
-
A body A of mass 1.5kg, travelling along the positive x-axis with speed 4.5m/s, collides with another body B of mass 3.2kg which, initially, is at rest. Because of the collision, A is deflected and m
$15.00
Physics
Waiting for answer
-
The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct? Gamma rays have higher energy than microwaves because gamma
-
lab report
-
How frequently should one apply sunscreen while swimming on a sunny day. A. Once since water absorbs UV rays B. More often since water reflects UV rays C. Once since water reflects sun's radiation
-
A noisy resistor produces a voltage Vn(t) at t=t1, the noise level X=Vn(t) is known to be Gaussian RV with pdf fx=1/(2pid2)exp(-1/2(x/d)2) compute and plot probability that abs(X)>kAlpha for k=1,2
$20.00
Physics
Waiting for answer
-
Suppose that the moment of inertia of a skater with arms out and one leg extended is 3.5 kg⋅m2 and for arms and legs in is 0.90 kg⋅m2 . If she starts out spinning at 5.8 rev/s , what is her angula
$20.00
Physics
Waiting for answer
-
If the current in each wire is the same, which wire produces the strongest magnetic field? A.) a wire that is 1 mm thick and not coiled B.) a wire that is 2 mm thick and not coiled C.) a 1-mm-thick
-
Conduct informational research on the topic. Summarize the results of this literature search and include references.Can you find experiments that have been conducted that have an experimental design s
-
A 8.8×10−4 V/m electric field creates a 4.4×1017 electrons/s current in a 1.7-mm-diameter aluminum wire.
-
Describe how the amount of heat released or absorbed related to specific heat capacity and amount of it? A) Amount of heat absorbed or released is doubled if quantity is doubled. If a different substa
-
lab report
$15.00
Physics
Waiting for answer
-
A driver brakes a 1420 kg car moving at 64.8 km/h [W] . The car slows down and comes to a stop after moving 729 m [W]. What is the force of friction acting on the car while it is slowing down?
$35.00
Physics
Waiting for answer
-
A uniform rod XY of weight 10.0N is freely hinged to a wall at X. It is held horizontal by a force F acting from Y at an angle 30° to the horizontal, as shown. What is the value of F? A- 5.0 N B- 8.
$20.00
Physics
Waiting for answer
-
Which two factors does the power of a machine depend on? work and distance force and distance work and time time and distance
-
A pattern for 1 uniform uses 12 yards of material. Boleslaw wants to know how many yards are needed for 8 uniforms. Chantal wants to know how many yards she will need to make 15 uniforms. Drag an expr
-
When mass m is tied to the bottom of a long, thin wire suspended from the ceiling, the wire's second-harmonic frequency is 200 hz . adding an additional 1.9 kg to the hanging mass increases the second
$50.00
Physics
Waiting for answer
-
Suppose that 2 j of work are needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. how far (in cm) beyond its natural length will a force of 30 n keep this spring stretched
-
How close to −9 do we have to take x so that 1 (x + 9)6 > 1,000,000 is satisfied? (give the largest possible value.) |x − (−9)| < -9.1?
-
Newton was outrwged when in 1684 German mathematician Wilhelm Leibniz published a calculus book find out why, describe how the issue is generally result today
$15.00
Physics
Waiting for answer
-
Mike and Joe take turns pitching a baseball, and Drew catches it. Mike can throw the ball harder than Joe can. Which of the following statements is true? A. The ball requires more force to stop when J
$15.00
Physics
Waiting for answer
-
Based on the diagram of a ball rolling down hill, what statement is true? The ball in box C has less kinetic energy than the ball in box B. B) The ball in box A has more kinetic energy than the ball
-
What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation would most likely be conducted to answer the following question?
$50.00
Physics
Waiting for answer
-
A 200 horsepower diesel engine’s BSFC is listed as; 0.5 lbs/hp-hour at full load (200 hp) 0.6 lbs/hp-hour at 75% load (150 hp) 0.7 lbs/hp-hour at 50% load (100 hp) 0.8 lbs/hp-hour at 25% load (5
-
Explain what the two teams of astronomers found in the 1990s. What question did their discovery create?
$35.00
Physics
Waiting for answer
-
A hose directs a horizontal jet of water, moving with a velocity of 20m/s, on to a vertical wall. The cross-sectional area of the jet is 5 x 10-4m2. If the density of water is 1000kgm-3, calculate the
$50.00
Physics
Waiting for answer
-
Metal plates of mass 0.1 kg are fired into an iron plate of large mass, m, and specific heat capacity, c, at a temperature of 15 degrees. 25% of the kinetic energy of the pellets is converted to therm
-
A 4-kg object falls vertically a distance of 5m. Its potential energy has changed by approximately how much?
$15.00
Physics
Waiting for answer
-
An oil fired steam generator is connected to a steam engine which produces 50kw of power when using oil of energy content 47mj/kg at a rate of 19.9kg/h.steam temperature is500c and cooling water tempe
-
Hello everyone Can anyone please help me in answering these questions as soon as possible Thank you
-
The modern cars, air condition, cutting tools, drill machine, laptop and aeroplane made of what material ?
-
The ball has joules of potential energy at point B. At position A all of the energy changes to kinetic energy. The velocity of the ball at position A is meters/seconds. Assume theres no air resistance
-
4. Which of the following is a way that some animals bodies adapt to living in extremely cold climates
$35.00
Physics
Waiting for answer
-
500-g weight, a spring scale, dynamic cart, a digital timer, a pulley, a thermometer, and a graduated cylinder. Which set of equipment would best utilize Newton's Second Law to find the mass of the dy
-
Why is history open to ongoing and changing interpretations?Changing values limit interpretation.New evidence is not available.Primary sources are determined to be unreliable.Revisionists are overrule
-
Terminal velocity is the velocity of _______ A. a falling object when it starts to break apart B. an accelerating object when it hits the ground C. an object falling in a vacuum (an environment wit
$15.00
Physics
Waiting for answer
-
The sound strikes the cantina walls and bounces off at the same angle as it struck in a process known as _____.
$10.00
Physics
Waiting for answer
-
Measuring the temperature of very cold substances can be challenging. Here is one way to measure the temperature of liquid nitrogen. A 50-g flake of aluminum is submerged in liquid nitrogen and left i
$10.00
Physics
Waiting for answer
-
Music played in front of the bandshell is clear and audible for a surprising distance in front of the bandshell. Why is this the case? Explain
-
What is the wavelength of an x-ray photon with energy 7.0 kev (7000 ev)? (1 ev = 1.60 × 10−19 joule.)?
-
Two charges are located in the x–y plane. if q1 = -3.50 nc and is located at x = 0.00 m, y = 0.800 m and the second charge has magnitude of q2 = 5.00 nc and is located at x = 1.50 m, y = 0.800
-
The specific heat of a certain type of cooking oil is 1.75 j/(g·°c). how much heat energy is needed to raise the temperature of 2.94 kg of this oil from 23 °c to 191 °c?
-
The mass on a spring is quadrupled. how will this affect the frequency at which the spring will oscillate?
$20.00
Physics
Waiting for answer
-
The ducts of an air heating system pass through an unheated area. as a result of heat losses, the temperature of the air in the duct drops by 3 c. if the mass flow rate of air is 90 kg/min, determine
-
Refrigerant r-22 is compressed adiabatically from a saturated vapor at 20 f to a final pressure of 200 psia. determine the minimum work requirement