Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The longer string is inclined at 65 degrees to the verticle, the shorter one at 39 degrees. Show that the horizontal resultant of these two forces on the lamp is zero. Calculate the weight of the la
The highest musical note on a piano has a frequency of 4,186Hz. Why would a tape of piano music sound terrible if played on a tape player that reproduces frequencies only up to 5,000Hz?
If the mass of the child and sled is 41 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.
What resistive force (assumed to be constant) does the wood exert on the bullet? (b) How long does it take the bullet to come to rest after entering the wood?
What are the frequencies of the first four harmonics of middle C(261.6Hz)?
A simple harmonic oscillator consists of a block of mass 1.80 kg attached to a springWhat is the amplitude of the oscillations? What is the amplitude of the oscillations?
You need to move a 144-kg sofa to a different location in the room. It takes a force of 109 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?
Ultrasound can be used to measure the thickness of protective coatings applied to surfaces as part of industrial processes because it reflects well from boundaries separating regions with different
Determine the average acceleration in m/s^2 (meter per second square), using a coordinate system with the x axis in the direction of the car's original motion and the y axis toward the side of the r
A helicopter flies at a constant altitude towing a mass M of 129 kg. The helicopter and the mass have a horizontal acceleration of 2.84 m/s^2. Ignoring air resistance find the tension in the cable.
Ultrasound probes can resolve structural details with sizes approximately equal to the wavelength of the ultrasound waves themselves. What is the size of the smallest feature observable in human ti
A steel cable with a total length 30m and mass 100kg is connected to two poles. The tension in the cable is 3,000N, and the wind makes the cable vibrate with the frequency of 2 Hz. Calculate the wa
If it starts 4.50 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 18.0 N?
A 26.0 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The coefficient of static friction between the table and the block is 0.475 and the
An archer puts a 0.26 kg arrow to the bowstring. An average force of 213 N. Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?
A mass-spring system oscillates with an amplitude of 3.70 cm. If the spring constant is 221 N/m and the mass is 495 g, determine the mechanical energy of the system.
A 1.00 m-diameter vat of liquid is 2.10 m deep. The pressure at the bottom of the vat is 1.30 atm. What is the mass of the liquid in the vat?
The particle is located at 0.15 meter and has a velocity of 24.0 m/s towards the negaive x-axis. Write down the postion function,velocity function and acceleration function for particle.
A wire has a mass of 1.00 g/cm is placed on a horizontal surface with a coefficient of friction of 0.250. A current of 3A flows eastward inside the wire while it is moved to the north horizon
One of the two forces acting on the object is known to be ~f1 = (f1xˆi + f1y ˆ|), where f1x = 12 N, f1y = 24 N. Determine the magnitude f2 of the other force acting on the object.
A heavy piece of hanging sculpture is suspended by a 68-cm-long, 4.6 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 109 Hz. what is the mass of the sculpture?
Tracy (of mass 49 kg) and Tom (of mass 73 kg) are standing at rest in the center of the roller rink. What is her constant acceleration during her time of contact with Tom?
A rabbit runs in a straight line with a velocity of +1.7 m/s for a period of time, rests for 12 s, and then runs again along the same line at +0.55 m/s for an unknown amount of time. The rabbit tra