What is the activity of a 398.8-g lump of carbon that is 2.79 x 10" years old? Give your answers in counts per second.

Q: A student hangs a block of mass M to a chord system as sown in the figure below. If she measures the…

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Q: 2. The density of cars (in cars per mile) down a 20 mile stretch of the Pennsylvania Turnpike is…

A: Given density of cars (in miles)  And length L=20miles Let's take a small element of length dx at…

Q: A uranium ion and an iron ion are separated by a distance of R = 56.50 nm, as shown in the figure.…

A: Given:- r= distance between uranium and electron = 23.4 nm = 23.4×10-9 m

Q: A certain child's near point is 15.0 cm; her far point (with eyes relaxed) is 127 cm. Each eye lens…

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Q: 4.) A 25.0 kg rock is dropped from a height of 35.0 meters. Just before it lands, it is going 42.2…

A: Given data for Question 4 mass (m) = 25 kg height (h) = 35 m speed (v) = 42.2 m/s

Q: this answer is incorrect. please stop giving me incorrect answers.

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Q: An electron enters a uniform clectric field of 145 N/C [>], The clectron displaces 3.10m. If the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The roller-coaster car shown below (h₁ = 31 m, h3 = 28 m, h4 = 10 m), is dragged up to point 1 where…

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Q: V₂ R₁ ww IR2 R₂ + VR2 (1) IS For the circuit shown above: V₁ = 2 V, R₁ = 2 Q2, R₂ = 4 Q2, 1, = 4 A…

A: Given data: The voltage is Vs=2 V The resistance is  R1=2 ΩR2=4 Ω The current is Is=4 A It is…

Q: Suppose two billiard balls, A and B, with the same mass, undergo a head-on elastic collision. Ball A…

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Q: I use a bucket on the end of a rope to raise/lower objects into/from my treehouse. Rather than risk…

A: Given data:  Mass of phone (m) = 0.2 kg Acceleration (a) = 1.1 m/s2, downward Required: The…

Q: 1. Three resistors, 250, 450, and 750, are connected in series, and a 0.51-A current passes through…

A: As per our company guidelines we are supposed to answer ?️only first 3 sub-parts. Kindly repost…

Q: Two point charges, q1 = -3.7 µC and q2 = 3.7 µC, are placed on the x axis at x1 = 4.7 m and x2 =…

A: In the given problem, there are two charges q1=-3.7 μC=-3.7×10-6 Cq2=3.7 μC=3.7×10-6 C These charges…

Q: QUESTION 20 uppose a large rock is ejected from the volcano with a speed of 20.2 m/s and at an angle…

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Q: Consider a three-dimensional infinite-well, modeled as a cube of dimensions Lx L× L. The length L is…

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Q: A simple pendulum oscillates with frequency f. Part A What is its frequency if the entire pendulum…

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Q: Answer using calculus. Question in photo.

A: As per the guidelines I can only solve three subparts Given the total charge of the rod is Q and the…

Q: As shown in the diagram below a block is attached to a spring and a cable. The block is at rest & is…

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Q: A proton, traveling upwards at 5x10* m/s, enters a magnetic field of 0.65 T pointing out of the…

A: Answer               5.2*10^-15 N

Q: Answer in terms of calculus. Look at pics for question.

A: Given Information: The location of the charge "q" = (0, y) The point where the electric field is…

Q: (Q22-Q23). A student is pulling a crate with a mass of 20.0 kg along a horizontal floor with a rope…

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Q: need help, some explanation would be much appreciated for upcoming homework. Thanks in advance.

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Q: In the following diagram containing two charges, Q1 = 2.00 µC is located at (0,3) and Q2 located at…

A: The electric potential at the origin due to charge Q1 is, V1=kQ1r1=9×1092.00 μC10-6 C1 μC3 m=6×103 V…

Q: Calculate the final speed of a solid sphere and a hoop that roll down a 2.0 m incline.

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Q: heelo none of the answers are corect and some werent even answered

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Q: Consider a very long cylinder of radius R and length L, carrying a charge Q which is uniformly…

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Q: POOR FLUTO at change in scientit es the cartoon abov

A: The answer is as follows :-