Uranium has a half-life of 4.47 billion years! How long does it take for a sample of 100 grams to decay to 87 grams?

Q: 1200eal) - The thermos jug contains 300 grams of coffee (mainly water) at 2% 90 degrees, in this jug...

A: if the specific heat of material is c mass is m and if the temperature of material is changed by T t...

Q: A string fixed firmly on both ends resonates at 430 Hz and 470 Hz with no resonance frequencies in b...

A:

Q: of flight, the projectile lands on the ground. At what angle above the horizontal was the projectile...

A: Correct answer (c) 30.7 degrees  

Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall b...

A: Given parameter                        Work(W) = 1000J                        Time (T) = 20s

Q: The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction ...

A:

Q: A 60 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 12° ...

A:

Q: Explain KCL and KVL with suitable circuit diagrams. Apply Kirchhoff's law and find the branch curren...

A:

Q: A car travels in the +x-direction on a straight and level road. For the first 4.00 s of its motion, ...

A:

Q: 3 y d Proton Figure 2 A proton is moving in the positive x-direction as shown in Figure 2 with a spe...

A:

Q: Block A is accelerating upward at a constant rate of 2 m/s2 and moving downward at 5 m/s at the in...

A:

Q: C = 1.50µF C2 = 2.65µF HE C3 = 3.00LF C= 4.50µF E 14.00 Electrical Quantities Total 21. Сарacitance ...

A:

Q: William has a mass of 59.8 kg and Anne has a mass of 42.9 kg, both of which have skates, are facing ...

A: Mass of William m1=59.8 kg, mass of Anne m2=42.9 kg and both of them are at rest at first so initial...

Q: 7- Using a gas thermometer with a constant volume to measure the temperature, the pressure at 0 C eq...

A: Given, To = 0 oC ,  T1 = 20 oC ,      h0 = 80 cm , h1 = 85.8 cm Rate of change in height wrt T = ( h...

Q: A 380.0 g  volleyball approaches a player horizontally with a speed of 15.0 m/s.         The player...

A: Given: The intial velocity of the ball is 15. m/s. The mass of the ball is 380 g. The applied force ...

Q: V=IR Directions: Place the correct answer with units in the space provided. 2 points for each questi...

A: We know that formula of voltage V  =IxR volt   I  =  V/R amp. R  = V/I ohm

Q: i into paper axle in/out magnetic field B a i out of paper cw / ccw big / small cw / ccw big / small...

A: The force acting on the coil is Lorentz force given by  F = i (l x B)  i is current l is the length ...

Q: O A soccer player kicks a ball, while imparting spin to bend it. The ball starts on the ground and i...

A:

Q: If a student kicks a soccer ball with 75 Newtons of force, with how much force did the soccer ball h...

A: Answer:-  Given  A student kicks a soccer ball with 75 Newtons of force.  We know that  According to...

Q: What is the inductance of a coil whose resistance is 105 Ω if it draws 0.47 A from a 119-V, 60-Hz po...

A:

Q: The two bars shown in the figure are used to support a load P. When unloaded, joint B has coordinate...

A: Coordinates of B (0,0) Coordinate of C will be (4,6) Coordinate of A will be (-7,6) We have to find ...

Q: 11. Complete the table below by identifying the effects on resistance and effects on current flow of...

A:

Q: cincuit has a nesitance of 25 2 ond Cunenst of 19 A, what is the vobage If a

A: Given Resistance of the circuit is R=25 Ω Current in the resistor is i=19 A   Formula From Ohm's law...

Q: 2. A battery has a charge of 3.5mC. It has an initial EP of 600V which moves to the final EP with 80...

A: Given  Charge is q=3.5×10^-3 C Potential difference is =800 V-600 V= 200 V

Q: Part A A circular wave travels outward from the origin. At one instant of time, the phase at r1 = 23...

A: Given Information:- Phase of the wave at r1=23.0 cm is ϕ1=0 rad Phase of the wave at r2=87.0 cm is ϕ...

Q: 1. Three source charges are placed as shown by the figure below. Q1 is located at (0,4m) and has a c...

A:

Q: The asteroid belt between Mars and Jupiter consists of many fragments (which some space scientists t...

A:

Q: 6- When measuring the temperature of hot water using a fixed-volume gas thermometer, it was found th...

A: Since, it is fixed volume gas thermometer. It means volume is constant and we can use Boyle's law to...

Q: 7- Using a gas thermometer with a constant volume to measure the temperature, the pressure at 0 C eq...

A:

Q: 3 tirmes the sharge of the other

A:

Q: Does water boil at higher temperatures at higher pressures? Explain. Cite answers

A: Does water boil at higher temperatures at higher Pressures

Q: Two point charges both carry 2.00 Coul charges, one positive and one negative, how far apart would t...

A:

Q: Rank the three tanks by the distance that the water will travel horizontally before it hits the grou...

A: There are three tanks that contain water of different levels.   Let hA = level of water is cylinder ...

Q: A 50.0-kg marathon runner runs up the stairs to the top of Chicago’s 443-m-tall Willis Tower.      ...

A: Given: m = 50.0 kg h = 443 m t =15.0 minutes = 15.0*60 sec = 900 sec

Q: 4. A racing car has a uniform acceleration of 4 m/s2. What distance will it cover in 10 seconds afte...

A:

Q: A force of 5 N acts on a rod that is 2 m long. For each of the situations (top view 3. perspective) ...

A:

Q: What is the inductance of a coil whose resistance is 111 Ω if it draws 0.82 A from a 120-V, 53-Hz po...

A:

Q: A worker drives a 0.500 kg spike into a rail tie with a 2.50 kg sledgehammer. The hammer hits the sp...

A: The concepts used to solve this problem are kinetic energy and internal energy. Initially, use the m...

Q: A hydraulic lift has a maximum gauge pressure of 15 atm. If the largest vehicle it can support has a...

A: Given data: Maximum gauge pressure, Pin = 15 atm Mass, m = 10000 kg   Solution: Write the equation t...

Q: (3) A 3.00 µF capacitor is connected to a 12.0 V battery. How much energy is stored in the capacitor...

A:

Q: 1.10 The pressure rise Ap associated with wind hitting a win- dow of a building can be estimated usi...

A: In this question we have to calculate the pressure rise. Please give positive feedback if the answer...

Q: Calculate the work needed for a bird of mass 120 g go to fly a height of 50 m from the surface of th...

A: Given data The mass of the bird is given as m = 120 g. The height on which the birds fly is given a...

Q: A 210-kg load is hung on a wire of length of 3.30 m, cross-sectional area 2.00 x 10-5 m2, and Young'...

A: mass of load (m) =210 kg initial length of Wire (L0) = 3.3 m Cross sectional area of Wire (A) = 2.0 ...

Q: Caleulate the of a eneryy 2Kg mas8 body movingwitha velocity of 0.1 metne's

A: Given data :              Mass.  =  m               Velocity  =  v        To find  :              Ki...

Q: Part A A loudspeaker at the origin emits a 100 Hz tone on a day when the speed of sound is 340 m/s. ...

A:

Q: A ball is thrown so that its initial vertical and horizontal components of velocity are 50 m/s and 1...

A:

Q: You have exactly 3 minutes 34 seconds to get to your next class on time and that classroom is 448 m ...

A:

Q: 1SJI 110 una An object of mass 50 g has a volume of 20 cm. Calculate the density of the object. If t...

A: Given data :             Mass of  the object  =  m            Volume of  the object  = v            ...

Q: 2 (a) A straight conducting wire is placed perpendicularly to the earth magnetic field at a location...

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

Q: A rocket-powered sled moves along a track, eventually reaching a top speed of 192 m/s to the west. I...

A: Apply the first kinematic equation. Here, v represents the final velocity, u represents the initial...

Q: wo horizontal parallel plates are separated by a distance of 168mm creating an electric field of 29µ...

A: Given: The electric field is 29µN/C. The separation between plates is 168 mm. The initial speed of t...

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.