The half-life of a radioactive isotope is 140 d. How many days would it take for the decay rate of a sample of this isotope to fall to one-fourth of its initial value?

Q: Which of the following equations correctly evaluates the scalar triple product of three Cartesian…

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Q: Two forces, F1and F2, act on the 7.00-kg block shown in the drawing. The angles made by the forces…

A: Given data F1=59 NF2=49 Nμk=0.1m=7 kgθ=400

Q: A student is tesling project. is 10:0 m length is made up a wire for If length of diameter is the…

A: Length of wire = 10 metre Diameter of wire =2.5 cm Young modules = 200×109N/m

Q: 4) What is U, the energy stored in this capacitor? J Submit 5) The battery is now disconnected from…

A: 4) The net capacitance is,…

Q: Space debris left from old satellites and their launchers is becoming a hazard to other satellites.…

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Q: I. I. Iz

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Q: A car is traveling at a speed of 23 m/s. (a) What is its speed in kilometers per hour? km/h (b) Is…

A: he given information is that a car is traveling at a speed of 23 meters per second (m/s). the speed…

Q: 3. For the situations below, describe the relationship between n, & n₂. A) B) 112 ոլ ոլ ni D ոշ n₂

A: Given Data:See the figure. Data is pulled from the figure.i = angle of incidence>r = angle of…

Q: A skater spins about a fixed point on the ice. She begins with her arms extended and an initial…

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Q: Consider the hemispherical closed surface in Fig. 1. The hemisphere is in a uniform magnetic field…

A: Using Guass law in magnetic flux

Q: R1=82 +, BV R3=62 R2=32 Figure Q1(b)(ii)

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Q: Q14 only

A: The object with less density floats on the objects with greater density but the object with greater…

Q: A point mass of 1.50 kg is connected to the end of a 2.00 m long rod of negligible mass. The other…

A: In the question given mass of point, length of rod and net torque. we have to find the value of…

Q: A force of magnitude P = 169 N is applied to the stationary machine handle as shown. Write the force…

A: Given:-  A force of magnitude of P = 169 N was applied to the machine handle. Find:-  Write the…

Q: 25 A horse is dragging a crate behind it. The horse applies a force of 60.0 N to accelerate the…

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Q: - A parachutist relies on air resistance to decrease her downward velocity. She and her parachute…

A: Given data The total mass is m=55.0 kg The upward force due to air resistance is,Fr=600 N As the…

Q: Q.4: A 1-kg particle is attached to the end of a rope (J), It rotates in a vertical circle of radius…

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Q: LO 7: Using the symmetry of the arrangement, determine the direction of the force on q in the figure…

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Q: A block accelerates down a frictionless ramp at an angle θ=26º.  Determine the acceleration.

A: Given information: The mass of the block, m The angle of inclination of the ramp, θ=26°

Q: Two flywheels of negligible mass and different radii are bonded together and rotate about a common…

A: Given data:  Radius of smaller flywheel (r') = 21 cm Force on smaller flywheel (F') = 50 N Radius of…

Q: ONLY PART D AND E

A: D. pulley angular acceleration = 2.99687 rad/sec2 E. The rotational Inertia of pulley = 4.3 x 10-3…

Q: mall airplane flying horizontally with a speed of 186 mi/hr at an altitude of 315 ft above a remote…

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Q: 16) Balsa wood with an average density of 130 kg/m³ is floating in pure wat What percentage of the…

A: Density of Balsa Wood = 130 kg/m3 Density of Water = 1000 kg/m3

Q: Problem 1: A rectangular wire loop located in the plane of the page has a width L, and its length,…

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Q: A mass of 0.3 kg. is connected to a massless spring with a force constant k = 20 N/m. The system…

A: Givenmass, m=0.3 kgk=20 N/mamplitude, A=4 cmx=2cmtotal energy of the system , E=12kA2where A is…

Q: 1 Given that k E, solve for the value of €,. 4 E0 A. 8.85 x10-12 N m2 B. 9.0 x10-12 c² Nm2 С. 3.14…

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Q: Car A moving along a horizontal road collides at an intersection with car B moving at 16 m/s at 32'…

A: The given data are listed below with appropriate variables. Here, uB denotes the velocity of a car…

Q: Attached photo. Please help! I need to know how to

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