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Question:
The smallest insects that a bat can detect are approximately the size of one wavelength of the sound the bat makes. What is the minimum frequency of sound waves required for the bat to detect an insect that is 0.57 cm long? (Assume the speed of sound is 340 m/s.)
Cliff and Will support the board at each end so that it is horizontal. A 52 kg boulder is placed on a 2.00 m long board at a point that is x = 1.45 m from Cliff. What force does Will apply to the board
A 2.0 kg object moving with a velocity of +8.0 m/s collides with a 8.0 kg object that is initially at rest. What is the coefficient of restitution for this collision
A string with a length of 3.0 m has two adjacent resonances at frequencies 112 Hz and 140 Hz. Decide the speed of the waves on the string vibrating at 140 Hz. Decide the wavelength of the 140 Hz resonance.
In one design, the large spring with spring constant 2.0×10^4 was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to the ship's frame.
A small plane tows a glider at constant speed and altitude. If the plane does 2.09 105 J of work to tow the glider 130m, what is the angle between the two rope and the horizontal
In a particle accelerator the protons travel around a circularpath of diamter 23 meters in a chamber of 10^-6 mmHg pressure and295K temperature. what is the fean free path of the gasmolecules if the molecular diameter is 2 x 10^-8 cm
Is it possible for both the pressure and volume of a monatomic ideal gas to change without causing the internal energy of the gas to change?
A 7.0 g bullet is fired into a 1.5 kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the block rises to a max height of 12 cm. Find the initial speed of the bullet.
A solenoid of length 50 centimeter is made of 11000 circular coils. It carries a steady current of 11 Amp. Estimate the initial flux through the small coil
A proton is located at x = 1.0 nm, y = 0.0 nm and an electron is located at x = 0.0 nm, y = 4.0 nm. Find the attractive Coulombic force between them
Discover the electric energy density among the plates of a 225-F parallel-plate capacitor. The potential difference among the plates is 390V , and the plate separation is 0.278mm .
the forces acting on the arm of a person lifting a dumbbell. the force f is the force puling on the hand due to the
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