Recent content by FrenchAtticus

Can anybody help me out?

Homework Statement A bat moving at 4.5 m/s is chasing a flying insect insect. The bat emits a 52 kHz chirp and receives back an echo at 52.75 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 342 m/s. Homework Equations f1 = f ((velocity +/-...

energy in a compressed spring is F = -Kx and is conservation of energy m1v1 = m2v2?

Conservation of energy is mgh1 + 1/2mv1^2 = mgh2 + 1/2mv2^2 energy of a moving block is 1/2mv^2 energy of a compressed spring is potential? How do I apply these to find how much the spring will compress.

Homework Statement A block of mass m slides on a horizontal frictionless table with an initial speed. It then compresses a spring of force constant k and is brought to rest. How much is the spring compressed x from it's natural length. Homework Equations ??

Though this is part of my homework I posted it here because it's a general rule that applies to all physics and doesn't contain specific values from my homework. A block of mass m slides on a horizontal frictionless table with an initial speed. It then compresses a spring of force constant k...

Homework Statement A spring-loaded gun can fire a projectile to a height h if it is fired straight up. If the same gun is pointed at an angle of 45 degrees from the vertical, what maximum height can now be reached by the projectile. 1. h _ 2. h / 2\/2 3. h / 2 _ 4. h / \/2 5. h...

Homework Statement A heavy ball swings on a string in a circular arc of radius 1m. The two highest points of the ball's trajectory are Q and Q'; at these points the string is +/- 20 degrees from the vertical. Point P is the lowest point of the ball's trajectory where the string hangs...

Alright thank you, that helps a ton.

Homework Statement A 73 kg high jumper leaves the ground with a vertical velocity of 7.6 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s^2. Homework Equations mgh1 + 1/2mv1^2 = mgh2 + 1/2mv2^2 The Attempt at a Solution 0 + 1/2(7.6)^2 = 9.8(h2) + 1/2(v2)^2...