If we simplify the model for a mammal's heart, it pumps about 23 g of blood, accelerating it from 25 cm/s to 35 cm/s over a period of 100 ms.  Question 1: What is the magnitude of the average acceleration of this blood? answer in m/s^2 Question 2: What is the average force exerted by the heart over this period of time? answer in m/s^

Q: A 7.80 g bullet is initially moving at 610 m/s just before it penetrates a block of wood to a depth…

A: Given value--- mass = 7.8 g. initial speed = 610 m/s. distance traveled in block = 5.2 cm. We have…

Q: An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by…

A: Data given:  An air filled parallel-plate capacitor Area (A) = 7.60 cm2  Distance (d) = 2.20 mm…

Q: A planet has a mass of 6.71 x 1023 kg and a radius of 3.51 x 106 m. (a) What is the acceleration due…

A: Given data: Mass of planet (M) = 6.71×1023 kg Radius (R) = 3.51×106 m Mass of the person (m) = 69.7…

Q: A 1320 kg car skids to a halt on a wet road where μkinetic = 0.32. How fast (in m/s) was the car…

A: Solution: Given: A car is braked to stop it. You are required to find the initial speed of car. m =…

Q: the voltage across a 3.71uf capacitor in a tv circuit is 4.54 mV. Find the voltage after 0.563ms if…

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Q: A basketball player jumps straight up for a ball. To do this, he lowers his body 0.270 m and then…

A: Given, lower height, hi = 0.270 m final height, hf = 0.940 m

Q: you push on the side of a skyscraper with a force of 100 N. how much force does the skyscraper push…

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Q: A projectile is launched from ground level with an initial speed of 41.5 m/s at an angle of 33.5°…

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Q: 1. The 20-kg homogeneous smooth sphere rests on the two inclines as shown. Determine the contact…

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Q: Heat is the energy transferred between bodies due to a temperature difference the specific heat of…

A: Required: The definition of Heat

Q: (ex) Block 1 (mass m₁) sits on block 2 (mass m₂), which sits on a horizontal frictionless surface. A…

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Q: A long string is pulled so that the tension in it increases by a factor of three. If the change in…

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Q: Using your answer from #2, how far did the cannonball travel in the horizontal direction?

A: Required data: It is given that the projectile is fired at 0 degrees. Which means that the velocity…

Q: What law state that the increase/decrease in potential or kinetic energy will result in a change in…

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Q: A projectile is launched from point A with the initial conditions shown in the figure. Determine the…

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Q: 1. Find the root-mean-square speed of nitrogen gas at the same temperature. 2. Calculate the…

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Q: Two people push identical crates, so that they slide along a 10 m stretch slippery floor. Each…

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Q: how 2.40xj1510+15 arrived at 2.40x15102+152

A: Given value--- R = 10 ohm. reactance = 15 ohm. RMS voltage = 20 V. total current = 2.40 Amp. We…

Q: A parallel plate capacitor has plates of area A = 8.00 x 10-2 m² separated by distance d = 2.22 x…

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Q: An oscillating block-spring system has a mechanical energy of 2.34 J, an amplitude of 13.6 cm, and a…

A: Given data: Mechanical energy, E=2.34 J Amplitude, A=13.6 cm=13.6×10-2 m Maximum speed, vmax=4.88…

Q: 4. What was the hammer's speed after falling for 1s? m/s

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Q: Suppose you are riding a merry-go-round. You sit on a horse that is located 5 meters from the center…

A: Mathematically, centripetal acceleration given by: ac = v2/r where r is the radius and v is the…

Q: 18 kg. over the side of a building. the work required to the chain

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Q: Your feet feel warmer on a rug than on a tile floor because the rug is a better insulator than tile…

A: Heat Conduction:- Heat is transferred to its neighbors (partially) by the interaction of nearby…

Q: Determine the force P required to maintain the 200-kg engine in the position for which 0 = 27°. The…

A: Consider the angle ACB is α and the angle ABC is β. Determine the length BC.

Q: The slope field below indicates that the differential equation has which form? (Assume the…

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Q: A 300-volt electromotive force is applied to an LR-series circuit in which the resistance is 500…

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Q: Current Attempt in Progress At New York City, the earth's magnetic field has a vertical component of…

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Q: I got this problem wrong as well, I don't know what I keep getting the wrong answer. Can you help me…

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Q: ou solve a problem finding the acceleration of a car starting from a stop. You get a result of 5.5…

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Q: Assume an oil drop has a volume of 0.15 cm^3 . If you had Avogadro’s number (6.022 x 1023) of oil…

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Q: An anstonomer on a planet orbiting the star Deneb wants to differentiate the reflected light by…

A: Given,  Earth radius, r = 6400.0 km Distance from the sun, d = 1.3 x108 km

Q: Two capacitors with capacitances of 1.0 and 0.5 µF, respectively, are connected in parallel. The…

A: In a parallel connection, the voltage remains the same. So, both capacitors will have the same…

Q: middle). If George weighs 560 N and one of the scales reads 312 N, what does the other scale read?…

A: Given that:Weight of the board: WB=38 NWeight of George: WG=560 NReading of the scale: R1=312 N Let…

Q: 4. A stone is thrown vertically upward with an initial velocity of 32 ft/s from the top of a…

A: Given value--- A stone is thrown vertically upward with an initial velocity of 32 ft/s from the…

Q: A hydraulic has two pistons. The area of piston 1 is ELEVEN times SMALLER than the area of piston 2.…

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Q: A student begins at rest and then walks north at a speed of v₁ = 0.85 m/s. The student then turns…

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Q: how do you solve for t in tcos0

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Q: The current in an 80-mH inductor increases from 0 to 60 mA. How much energy is stored in the…

A: Given data:  Inductance (L) = 80 mH Current (I) = 60 mA Required: The energy stored in the inductor…

Q: Calculate how many seconds there are in 1.0 Mars year (678 Earth days). Report your answer in…

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Q: You heat the coals of your grill to cook your favorite BBQ food to a temperature T=500 F. What is…

A: Temperature (T) = 500F

Q: The drawings show three charges that have the same magnitude but may have different signs. In all…

A: |q| = 8.6 μC value of d = 3.8 mm

Q: Problem 2 ( A shot-putter is thrown from a height h = 2.1 m above the ground as shown in the figure…

A: Given  Initial height, h = 2.1 m  Initial speed, U = 13.5 m/s  Angle 30 degree from horizontal

Q: Is this equation = to newtons law of universal gravity? and we ignore mass because it does not…

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Q: (a) Determine the current in each branch of the circuit. branch left branch middle branch right…

A: (a) The circuit diagram is shown in below figure, From the circuit diagram, applying Kirchhoff's…

Q: In the 1989 movie "Batman" (likely before your time), the batman was able to execute a turn at high…

A: The batman makes a 90 degree turn using rope. The motion for this turn is circular motion. The…

Q: What is the density of diatomic nitrogen gas (N2) at a temperature of 20.00 C under a pressure of…

A: Given data- For Diatomic nitrogen gas (N2) temperature T= 20.0°C and pressure P=100 kPa  The atomic…

Q: The top speed of a utahraptor is 9 m/s. How long would it take utahraptor to run 1000 m if it…

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 9 m/s Distance traveled (d) = 1000 m…

Q: Oppositely charged parallel plates are separated by 4.37 mm. A potential difference of 600 V exists…

A: Given value--- separation between plates = 4.37 mm. Potential difference = 600 V. We have to…

Q: Consider the following two vectors. Vector A points directly South and has a magnitude of 5.00 while…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.