The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 4000 years?

Q: To suck lemonade of density 1020 kg/m³ up a straw to a maximum height of 4.80 cm, what minimum gauge…

A: Given density d=1020 kg/m3 height h=4.80 cm =0.048m hence gauge pressure produced in lungs will be…

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A: Depth of hole h = 4.50 cm Height of water holding tank H = 31.4 cm To determine The distance ''x''…

Q: A Spring with a Hooke's law constant of K N/m and an unstretched length of 1 cm is hung vertically…

A: Given: Spring constant k=32N/m Length L=22cm=0.22 m  Maximum displacement Y =38 cm

Q: How much energy is needed to accelerate a 1 x 108 kg rocket to a speed where in the Earth frame of…

A: How much energy is needed to accelerate a 1 x 108 kg rocket to a speed where in the Earth frame of…

Q: 22 (26). The voltage applied to the air-filled parallel plate capacitor is 85.0 V. As shown QIC in…

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Q: A woman is driving her truck with speed 53.0 mi/h on horizontal stretch of road. (a) When the road…

A: Given, the initial speed of the truck,  u= 53.0 mi/h=53.0×16093600=23.68 m/s static friction when…

Q: Consider the diagram below. The 12 kg box is held at rest on a frictionless incline by a tension…

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Q: A white billiard ball with mass mw = 1.29 kg is moving directly to the right with a speed of v =…

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Q: ic: You are an astronaut on the international space station. As you're unpacking the most recent…

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Q: A quarterback throws a pass to a defender on the other team who intercepts the football. Assume the…

A: Given data:  Distance (d1) = 28.3 m Distance (d2) = 46.4 m Total time (t) = 6.68 s Required: The…

Q: In the circuit below, what is the value of the current I3? A 25 2 F ○ 0.52 A ○ 0.25 A ○ 0.19 A ○…

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Q: Consider the 65.0 kg ice skater being pushed by two others shown in the figure. Fot F₁ F₂ Free-body…

A: Given, mass of the skater, m = 65.0 kg Forces, F1 = 28.0 NF2 = 17.0 N

Q: 4- Explain the principle of circular motion in windmills, and how does it help to generate clean…

A: Wind mills are used for production of energy. There are 2 types of energy which are renewable and…

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Q: A4 resistor is connected in series with the parallel assembly of 3 2 and 6 resistors. The current…

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Q: The figure shows a stream of water flowing through a hole at depth h = 19.9 cm in a tank holding…

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Q: A small exercise area for dogs is 27 meters long and 3.2 meters wide. What is the area of the dog…

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Q: two equal charges each of 1 C each are separated in air by a distance of 1 km, what is the magnitude…

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Q: A block with mass 6.00 kg is pushed with a force of 35.0 N at an angle of 62.0 degrees below the…

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Q: The bar clamp is being used to clamp two boards together while the glue between them cures. What…

A: given that   P=80 lb radius r = 3/16 inch and  effective friction coefficient is 0.2. pitch = 1/12

Q: Transverse waves travel on each string of an electric guitar after the string is plucked. The length…

A: Length of each string, L=0.628 m Mass of the high pitched E string, m1=0.208 g Mass of the low…

Q: A ball is tossed with a speed of 7.0 m/s at an angle of 40 degrees above the horizontal from an…

A: initial velocity (v) = 7 mslaunch angle = 40 degree above the horizontal initial position = (0,1.2)…

Q: A student has a calorimeter with 211.7 grams of 26.6∘C water contained within it.  The student then…

A: Given data:  A student added hot water into cold water m1 = 211.7 g and T1 = 26.6°C m2 = 130.7 g and…

Q: The image distance and magnification of the following will be (Let each grid mark be 1 cm) A) di =…

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Q: A bicyclist starting at rest produces a constant angular acceleration of 1.40 rad/s² for wheels that…

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Q: You are lost at Sea – congratulations! Notice, however, that the Sun rises to an altitude of 40° in…

A: solution    When we calculate altitude from south then we are present in Northern hemisphere

Q: A stationary police car emits a sound of frequency 1200 HzHz that bounces off of a car on the…

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Q: A block of wood has a mass of 3.73 kg and a density of 682 kg/m³. It is to be loaded with lead (1.13…

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Q: 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value…

A: Steady temperature is a  state in a conductor where no more heat can be absorbed by the rod is…

Q: A long solenoid that has 1,040 turns uniformly distributed over a length of 0.450 m produces a…

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Q: parallel plate capacitor has metal plates, each of area 1.50 m2, separated by 1.50 mm. What charge…

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Q: A car travels due east and slows from 20 m/s to 5 m/s. In what direction is the net change in…

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Q: n astronaut on a spacewalk 200km above Earth drops a hammer (mass 2kg), which goes into orbit about…

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Q: Problem 5 Tennis Bounce A tennis ball of mass m is dropped from a height 4h and after bouncing on…

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Q: 1. A triangle wave varies as shown below over one period. Compute the RMS of this wave. What is the…

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Q: Simple Machine Prelab Draw the free body diagram on for each of the masses and the relevant pulleys…

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Q: Two particles, each with charge 56.3 nC, are located on the y axis at y = 22.9 cm and y = -22.9 cm.…

A: Given: The magnitude of the two charges is q1 = q2 = 56.3 nC The charge q1 is at y = 22.9 cm The…

Q: A 72 kg swimmer dives horizontally off a raft floating in a lake. The diver's speed immediately…

A: Given data:  Mass (m) = 72 kg Initial velocity (u) = 0 m/s Final velocity (v) = 3.8 m/s Time…

Q: 11 (11). As shown in Figure P22.11, the point charge +2Q is at the origin S and the point charge - Q…

A: The 3 charges are on the corners  of the right angled isoscele. Triangle as follows.

Q: a car of mass 2.0*10^3 kg is initialy moving at 21 m/s when the brakes are applied and the car is…

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Q: How much speed would a drag-free projectile shot at a 45 degree angle need to be launched to rise to…

A: Given, Height rise = 30 m Angle,θ = 45° We know that height of projectile = u2sin2θ2g where u is…

Q: In the circuit below, what is the value of the current I1? A F 0 0.19 A ○ 0.25 A ○ 1.25 A ○ 0.52 A…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: How many photons are produced in a laser pulse of 0.824 J at 507 nm?

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Q: Use the alternative ||u|| = 20, form of the dot product to find u. v. |v|| = 50, and the angle…

A: Given data:  Magnitude of two vectors |u| = 20 and |v| = 50 Angle between vector u and v θ = 5π/6…

Q: The ability of a force to open a door depends only on how big the force is. True False

A: Given:- The ability of a force to open a door depends only on how big the force is .

Q: 100 There is a system with four capacitors connected, as shown in Figure P25.10. (a) Calculate the…

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Q: The frequency of a photon having energy 100 eV is (Take h = 6.62 x 10-34 J s; 1 eV = 1.6 × 10-¹⁹ J)…

A: Given data:  The energy of photon (E) = 100 eV h = 6.62×10-34 J.s 1 eV = 1.6×10-19 J Required: The…

Q: Hanging from a horizontal beam are nine simple pendulums of the following lengths: (a) 3.7, (b) 5.2,…

A: The time period of a pendulum is given as  Time period, T=2πωwhere, ω is angular frequency. In case…

Q: A point charge q1 = +6.20 μC is held fixed at the origin. A second point charge with q2 = +1.50 μC…

A: Given,2 q1= +6.20μC (fixed at origin)  q2= +1.50μC ( at a distance +25cm from origin on x axis)…

Q: An astronaut in her space suit has a total mass of m₁ = 89.0 kg, including suit and oxygen tank. Her…

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