Molecules attract or repel one another due to _____ forces. a)nuclear b)weak c)gravity d)electric

Q: At the scene of a car accident, the forensic investigator measured the skid marks from one of the…

A: …

Q: Two smooth reflecting surfaces (A and B) are perpendicular to each other. Light strikes surface A at…

A:

Q: V = 100 V R1 = 150 R2 = 8 R3 = 200 R4 = 160 R5 = 40 R6 = 50 R7 = 200 Compute the following:…

A: Note :-  You have posted multiple subparts question. As per guideline regards multiple subparts…

Q: How much heat is released by a system when 45 J of work is done on it to decrease its energy to 23…

A:

Q: A 1500kg sport car is moving westbound at 20m/s on a level road when it collided with a 4000kg truck…

A: the magnitude of the velocity of the two vehicles just after the collision is        5.45 m/s.

Q: Two infinitely long wires are laid parallel in air, carrying current I. In which of the following…

A:

Q: In three to four sentences, explain how the photoelectric effect supports a particle model of…

A:

Q: Initial angle 30 degrees Initial velocity along the X axis 1.? Initial velocity along the Y axis 2.?…

A:

Q: Certain spiral galaxy is 8.6 Mpc away from us. How fast in km/s is this galaxy moving away from us?…

A: Write the given values with the suitable variables. d=8.6 MpcH0=69.1 km/s/Mpc Here, d is the…

Q: The acceleration of a point moving on a vertical line is given by the equation a = 12t – 20. It is…

A:

Q: A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an…

A:

Q: Answer this question 10

A: An astronaut abourt the space shuttle orbiting the earth is considering to be weightless.

Q: What is the energy of a photon of wavelength 5.50 x 10-7 m, in Joules? [?] 10[²] J X

A: Given: wavelength (λ)= 5.50 x 10-7m = 550 nmTo find: Energy of this photon(E)…

Q: A simple pendulum is made from a 0.621-m-long string and a small ball attached to its free end. The…

A:

Q: A sample of copper is heated to 590°C and placed in 400 g of water at 21.5°C. The final temperature…

A:

Q: 4. A rifle bullet is fired with a muzzle velocity of 375 m/s at an angle of 30 degrees with the…

A:

Q: A heavy hydrocarbon oil which has a Cp = 2.30 kJ/kg.K is being cooled in a heat exchanger from 371.9…

A:

Q: An object on a spring: An object is attached at the end of a spring with no friction. The amplitude…

A:

Q: For sound waves, different amplitudes mean different (a) loudness (b) pitches (c) (d) speeds. (e)…

A:

Q: Determine the half-life (in s) of a radioactive sample that has a decay rate of 5.60 x 10¹¹ Bq when…

A:

Q: Consider a flute (open at both ends) with length L. What is the corresponding wavelength of its…

A: In a tube open on both sides, the standing wave of fundamental frequency for that particular length…

Q: pha particles are projected toward a gold foil from a distance that is sufficiently large to…

A:

Q: 1500kg sport car is moving westbound at 20m/s on a level road when it collided with a 4000kg truck…

A: 1500kg sport car is moving westbound at 20m/s on a level road when it collided with a 4000kg truck…

Q: What is the phasor representation of I(t) = cos(wt) at half-period? O A. ← O B. ↑ O C. → O D. X

A: At half period  Wt = π  I = I0Cosπ = -I0

Q: Two infinetly long wires are laid in four different situations. Each wire is carrying a current I…

A:

Q: a) The activity of a radioactive source is given by dN AN dt where N is the number of nuclei present…

A: A) The activity of a radioactive source is given by : -dNdt = λN initial number of nuclei = No at t…

Q: 3. A mass of 5kg is suspended by two strings 26cm and 33 cm long from two points that are 40cm apart…

A:

Q: 3. 兩任意的波互相疊加總是可看到拍的現象。 The phenomenon of beats can always be observed by superpose two arbitrary…

A: Beats Beats are the periodic and repeating fluctuations heard in the intensity of a sound, when two…

Q: re connected in series across the terminals of a 110 V

A: Let us assume each resistor is R ohm  Given that , potential difference , V = 110 v Current in the…

Q: the the MOMENTUM vs. TIME graph below to answer the following questions. Let east be the positive…

A: We know Momentum = Mass x Velocity. As mass is constant then Momentum varies along with the…

Q: In a lab, a foot-long test tube contains gasoline (density equal to 748.9 kg/m³) and oil (density…

A: Use pressure formula and add pressure for both the parts.

Q: Two resistors, A and B, are placed in series with each other and connected across the terminals of a…

A: Given data:  Two resistors A and B are connected in series combination Required: Total resistance of…

Q: A 12 V battery powers a parallel circuit. Each loop has a resistor that causes a 3.5 V potential…

A:

Q: An electric field of 39000 N/C points due west at a certain spot. What is the magnitude of the force…

A: Given data:  Electric field (E) = 39000 N/C, due West  Charge (q) = -9.5 μC = -9.5×10-6 C Required:…

Q: 3. A total resistance of 3 ohm must be produced by combining an unknown resistor R with a 12 ohm…

A:

Q: cable 50.0 m long and 2.00 mm in diameter is connected to a source with a potential difference of…

A:

Q: If A is a vector representing 100 km/h W15°S, what is - A? 5 A. 60 km/h N 15°E B. 60 km/h S 75°W C.…

A:

Q: If a car tire with a moment of inertia of 4 kg*m² has an initial angular speed of 8 rad/s and then…

A:

Q: 9.00kg hanging object is connected by a light, in extensible cord over a light, frictionless pulley…

A:

Q: A basketball player made a shot,the ball was released from the player hand at t=0 sec with initial…

A:

Q: Demonstrate the changes in a charge moving in a magnetic field

A:

Q: July 15,2004,NaDa lunch the aura spacecraft(mass is 2970kg) to study the earth climate and…

A: spacecraft(mass is 2970kg) to study the earth climate and atmospheric,the satellite was injected…

Q: Find the wavelength of light given off by a hydrogen atom when its electron drops from the n = 4 to…

A:

Q: In the Bohr model of hydrogen atom, the n is pictured to rotate in a circular orbit of radius -11 m,…

A: An electric current is a stream of charged particles, such as electrons or ions, moving through an…

Q: al energy of a river with 5m/s flow speed and 100m3/s of flow? If the leaving water still have 1m/s…

A: Givenv=5 m/sQ=100 m3/su=1 m/s

Q: A Lego brick of mass m is initially at the origin and moving to the right across a frictionless…

A:

Q: In one to two sentences, explain why electromagnetic radiation can be modeled as both a wave and a…

A: There is no doubt that EM radiation interferes and has the properties of wavelength and frequency.

Q: A circular coil of 20 turns and radius 10 cm is placed n a uniform magnetic field of 0.10 T normal…

A: Torque is the rotational equivalent of linear force. Here, we calculate  the given as follow;

Frame of reference

In physics, a frame of reference is a coordinate system used to specify either the position or the orientation or velocity of a body. The origin of the coordinate acts as a reference point for measuring the position or relative motion of a body. The coordinate system can be a cartesian coordinate, cylindrical coordinate, or a polar coordinate.