Physics

Hep me solve this Physics

A 5 kg block is projected vertically upward at 20 m/sec from grounds level. The block loses 40% of its initial energy to air resistance as it rises to a maximum height. To what height (in meters) abov

How can I prove with physics equations that a 7 point seatbelt would be safer than the average 3 pointer

Well it depends on how you define safe. When you stop in a crash, the belt applies a force to your body where it contacts. This force is what slows you down with the car so you dont fly out the windsh

How much force does the ring push at the top of the ride

In an amusement park ride called the Roundup passengers stand inside a 17.0 m diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane. Suppose the ring rot

Two sound speakers located at different points S1 and S2 are in-phase emitting a sound of frequency 494 Hz tra

Two sound speakers located at different points S1 and S2 are in-phase emitting a sound of frequency 494 Hz travelling in air. Six observers at points A, B, C, D, E, and F are listening to the sound c

Laser Beam Optics Physics Question

A krypton laser produces a cylindrical red laser beam 3.0 mm in diameter with 4.0 W of power. What is the light intensity on a wall 5.0 m away from the laser?-We are not given the beam divergence, so

Compare the forces acting on a cannon and the cannonball when it is fired

They are equal. The difference is in the mass of each of those, which makes the cannonball accelerate quickly, but the cannon hardly moves.

Physics torque and forces question (involves a second class lever)

A wheel barrow is 2,0 m long. A 50.0 kg pile of dirt is resting .5 m from the wheel. What force must be applied to raise the dirt? What is the mechanical advantage of the wheel barrow? If the dirt is

INTERESTING ANTIMATTER QUESTION?!

I was reading and... antimatter arise as the opposite from normal matter. What is considered as normal matter and also... If they say a particle thats positive has an antimatter particle thats negativ

Why 100mph of 2.5L car is faster than 100mph 1.5L car

i mean the speed-o-meter is meant to measure the SPEED; not the CAPACITY of the engine. in a related note, speed-o-meter for each type of car is uniquely designed to match the CARS SPEED. that, if u i

Why do I hear a noise in a empty Cup

The most likely explanation for the wave-like noise is ambient noise from around you. The seashell that you are holding just slightly above your ear captures this noise, which resonates inside the she

How are kepler and newton's laws related mathmatically

Im writing an essay, and the third paragraph must be about the topic above.. I cant seem to find the answer in my notes, only equations without explanations. If you could help in any way, itd be great

Can a machine be a force multiplier and speed multiplier at the same time

Just wondering if a machine can be both a force multiplier and a speed multiplier at the SAME time.-No. Conservation of Work/Energy requires that if you increase speed you must decrease speed by the s

A Scooter and a Lori are moving with the same speed. Which one requires greater force to stop? Explain.

Thanking you!-If by Lori, you mean truck then it will require greater force to stop. The phenomenon which works here is Momentum. Momentum=Mass x Acceleration So, even if both the objects are at same

How can you increase the momentum when you hit a baseball

Please and Thank you.-Ft = Δp So you should either increase the force you apply to it (swing harder), and/or increase the time that the bat and ball are in contact (make sure you follow through).-mom

How far does the ball travel before it stops bouncing

Consider a ball that is dropped from a height of 96ft in an absolute vacuum under the influence of Earths gravitational field (the acceleration due to which is 32 ft/s^2). If the ball always bounces b