The speed of propagation of the action potential (an electric signal) in a nerve cell depends (inversely) on the diameter of the axon(nerve fiber). If the nerve cell connecting the spinal cord to your feet is 0.9 m long and the nerve impulse is 16 m/s. How long (in s) does it take for the nerve signal to travel this distance ?

Q: Police use the formula: V20L to estimate the speed of a car, v, in miles per hour, based on the…

A: Given: The Length of skid mark L = 158 ft. The velocity formula is given as, v=20L

Q: Kinesin is a motor protein that moves cargo within cells in a series of rapid 8-nm -long steps. Each…

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Q: You want to convert the speed km/h into m/s for a physics problem. Which of the following could act…

A: Given:  Km/h into m/s

Q: A bicyclist in the Tour de France has a speed of 29.0 miles per hour (mi/h) on a flat section of the…

A: Speed value, v = 29.0 mi/h

Q: Electrons in the picture tube of an old-style television travel at 1.25 × 108 m/s. At this speed,…

A: Speed of electron "v"= 1.25× 10^⁸ m/s . Distance travel "d"= 11.5 Inches = 0.2921m

Q: Acar is going 19 m/s for 27 s. Draw an accurate graph showing the distance versus time for the car.…

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Q: 1)Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such…

A: Speed, v = 6.0 cm/year Time, t = 1 s

Q: A stone is dropped into a well. The sound of the splash is heard 2.11 s later. What is the depth of…

A: Consider the time taken by the stone to hit the water be t1, the time taken by the sound to travel…

Q: A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 7.35 ✕…

A:

Q: your hair grows at the rate 1/32 in. per day. find the rate at which it grows in nanometers per…

A: Given  The hair grows at the rate 1/32 in. per day. We have to find the rate at which the hair grows…

Q: Suppose your hair grows at the rate 1/31 in. per day. Find the rate at which it grows in nanometers…

A: Given data:  Hair growth rate = 1/31 in. per day Required: Hair growth rate in nm/s

Q: 8. The speed of sound is measured to be 342 m/s on a certain day. What is this in km/h?

A:

Q: How many times does a human heart beat during a person’s lifetime? How many gallons of blood does it…

A: Number of beats per minute, n = 84 blood pump in each beat = 50 cm3

Q: A nerve impulse travels along a myelinated neuron at 60.3 m/s. What is this speed in mi/h and What…

A: Given in question - Speed of neuron (v) = 60.3 m/s To find - What is this speed in mi/h and What is…

Q: Problem 2: A car is traveling at a speed of 33 m/s. art (a) What is its speed in kilometers per…

A: Given:  Speed  of car            S=33 m/s   we  have  to find  S  in  Km/h

Q: er robbing a bank in Dodge City, a robber gallops off at 14 m(i)/(h). 10 minutes later, the marshall…

A: Speed of Robber,                             Speed of marshall.                             The time…

Q: space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 9.86 ✕ 107…

A:

Q: The speed on I-75 is 65 miles per hour.  If onbe mile is equal to 1.6 km, what is the speed limit…

A: Given data:  Speed (v) = 65 mi/h 1 mi = 1.6 km Required: Speed in m/s

Q: Motor neurons in mammals transmit signals from the brain to skeletal muscles at approximately 25…

A:

Q: A world-class tennis player can serve a tennis ball at 150 mi/hmi/h (about 67 m/sm/s ). The length…

A:

Q: If you make multiple measurements of your height, you are likely to find that the results vary by…

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Q: Figure 1 shows the velocity-time graph of a person moving along one straight path called the x-axis.…

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Q: One day you decide to walk 8 km [S], then 6km [W] and finally 3.5km [N]. Find your total…

A: Given data:  Displacement (d1) = 8 km [S] d2 = 6km [W]  d3 = 3.5km [N] Required: The total…

Q: Tectonic plates are large segments of the Earth's crust that move slowly. Suppose one such plate has…

A:

Q: Abdul, while driving to school. computes the average for his trip to be 20km/h. On his return trip…

A:

Q: Suppose your hair grows at the rate of 1/32 inch per day. Find the rate at which it grows in…

A: Given:  1/32 inch per day

Q: There are more than 1/4 million species of beetle. Assume the average length of a beetle is 1cm and…

A: The number of beetles ,N = 1/4 million = 250000 Average length of a beetle , l1 = 1 cm Average…

Q: As you are driving to school one day, you pass a construction site of a new building and you stop to…

A:

Q: FORM 3 PHYSICS REVISION SHEET 5. Two cars, Car A and Car B, participate in a drag race on a straight…

A:

Q: ectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has…

A: Given that: Speed of Tectonic plates, v= 3 cm/year =3×10-2(365×24×3600)=9.51×10-10 m/s

Scalars and Vectors

Scalars and Vectors are the classification of physical quantities that are used to denote various terms in physics.