• Transmission of nerve impulses. Nerve cells transmit elec- tric signals through their long tubular axons. These signals propagate due to a sudden rush of Na* ions, each with charge +e, into the axon. Measurements have revealed that typically about 5.6 X 10" Na ions enter each meter of the axon during a time of 10 ms. What is the current during this inflow of charge in a meter of axon?

Q: A car moves with a speed of 25 m/s. What distance will it travel in a time of 1 hour:

A: distance = speed x time

Q: A car traveling at a rate of 19.8 m/s skids to a stop in 2.89 seconds. Determine the skidding…

A:

Q: A penny is dropped from the top of a tall building. It falls 100 m to the ground. What is its final…

A: Consider the initial speed of penny, that is zero because it is dropped from rest,  be u, its final…

Q: Mr. M is now racing on a track that looks like the description in the picture. He laps around this…

A:

Q: A boll rounds a 10 m radius curve at 8 m/s. The magnitude of it's acceleration in m/s?

A: Given data :                Radius    =    R                 Speed     =    V          To find :…

Q: If the magnitude of the force is 18 N to cause a 1 kg object to move in a circle of radius 2 m. The…

A:

Q: At t=0, a car registers at 30 miles/hr. Forty seconds later, the car’s velocity is now at 50…

A: The given data are: u=30 miles/hr=303600 miles/s=1120 miles/sv=50 miles/hr=503600 miles/s=172…

Q: What is the minimum speed needed to clear the loop? Diameter is 15m.

A: Radius = 15/2 = 7.5 m  To complete the loop speed required at bottom  V = √(5gR)

Q: An airplane drops a care package in warzone.I want to find out how fast the care package travels…

A:

Q: A marble rolls off the edge of a 1.2 meter high table with an initial speed of 0.5 m/s. a) how long…

A: Write the given values with the suitable variables. h=1.2 mu=0.5 m/s Here, h is the height and u is…

Q: You shoot a cannonball off the side of a cliff. The cannonball leaves the cannon at 30 m/s , and it…

A: Given Velocity of the cannonball is u = 30 m/s and the horizontal distance covered by the cannonball…

Q: at 26 m/s. The magnitude of it's acceleration in m/s?

A: Given value--- radius = 40 m. speed = 26 m/s. We have to find--- acceleration?

Q: A stone is dropped from the top of a cliff and hits the foot of the cliff after 6s. How deep is the…

A:

Q: Find the capacitance ( in units of pF) of a metallic sphere that has a radius of 15.9 cm immersed…

A: Radius, r = 0.159 mPermittivity, ε0 = 8.8542×10-12 F/mDielectric constant, k = 2.16

Q: Planet Roton, with a mass of 3.25 x 1024 kg and a radius of 2700 km, gravitationally attracts a…

A:

Q: Planet Roton, with a mass of 9.00 x 1024 kg and a radius of 3600 km, gravitationally attracts a…

A: Given that the value of mass of the planet rotton and also given the radius. Then We have to…

Q: A boll rounds a 18 m radius curve. at 4 m/s. The magnitude of it's acceleration in m/s?

A:

Q: A 1200 kg car starts from rest at the top of a hill and at the bottom of the hill is moving at 45…

A: Given data:  Mass (m) = 1200 kg Initial velocity (v0) = 0 m/s Velocity at the bottom of the hill (v)…

Q: In a television tube, the electron travels from an electron gun to the screen 0.45 m away in 6.0 x…

A: Given value--- distance between electron gun and screen = 0.45 m. time = 6 × 10-9 s. We have to…

Q: During an Olympic bobsled run, the Jamaican team makes a turn of radius 7.8 m at a speed of 94.8…

A: The expression for find acceleration is a=v2r

Q: A boat is traveling at 7 m/s at a 90-degree angle to the current, which is moving at 1.3 m/s. What…

A: Given that:-Speed of the boat, vb=7 m/sBoat is travelling at 90° to the current.Speed of current,…

Q: What is the speed of the ambulance, in m/s, when it reaches the intersection if it makes it just…

A: :the minimum acceleration of the ambulance is 3.88 m/s2.initial speed u=19.75 m/sdistance required…

Q: A 5 kg cart is on a track. It is being held at the top of a hill that is 5 m high. If the bottom of…

A:

Q: A ball rolls off a step and drops to the ground in 0.5 seconds. What is it's speed in m/s when it…

A: Given data:  Initial velocity (v0) = 0 m/s Time (t) = 0.5 s Required: Final speed as ball hits the…

Q: A 2 kg stone, tied at the end of the string 1 m long is whirled in a vertical circle. If tension in…

A: To find-Speed of stone at the bottom (V1)=?Given-Mass of stone (m)=2 kgLength of string radius of…

Q: A carnival clown rides a motorcycle down a ramp and around a loop. If the loop has a radius of 18m,…

A: Given value--- radius of loop = 18 m. We have to find--- what is the slowest speed the rider can…

Q: In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 15.0 m in…

A: a)The required acceleration is,

Q: An airplane reaches a velocity of 80 m/s when it takes off. If the runway is 1 km in length, what…

A: Acceleration can be found by using equation of motion .

Q: An east bound plane leave Houston for Miami with 30mph tailwind at its back and arrives in 4 hours.…

A:

Q: Can you please provide a complete solution set to this problem?    A rollercoaster car is…

A: Diameter of the loop, D = 15 m For minimum velocity

Q: A car, initially at rest, travels from 0m/s to 18.9 m/s in 28.1 s. What is the car's acc

A:

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”