Question 4. A skateboarder of mass m approaches a ramp with height H and an incline angle of 0. You may ignore friction throughout this problem.

Q: A faulty thermometer has its fixed points marked as 5° and 95°. The temperature of a body as measure...

A: A

Q: The motion of a particle is defined by the equations x = 10t 5 sin t and y = 10 – 5 cos t, where x a...

A: The path r(t)=10t-5sin(t)i + 10-5cos(t)j is plotted as below, vertical axis being displacement and h...

Q: Amount of heat required to raise the temperature of a body through 1K is called ___________ a) Speci...

A: B

Q: If there were no gravity, which of the following will not be there for a fluid? a) Viscosity b) Surf...

A: Option

Q: If radius of the earth is reduced, then ___________ a) Time duration is reduced b) Earth rotates slo...

A: C

Q: The thermometer bulb should have ___________ a) High heat capacity b) No heat capacity c) Small heat...

A: C

Q: The factory has a choice of two beta- Sources. Source Hafe Barium119 85 minutes Strantium-90 28 year...

A: Introduction: Beta-decay is a type of radioactive decay in which a beta particle is emitted from an ...

Q: Temperature of oxygen kept in a vessel is raised by 1°C at constant volume. Heat supplied to the gas...

A: A

Q: A long length of copper wire is initially at room temperature (23∘C) when it is connected across the...

A: Given: The initial temperature of copper wire is Ti=23∘C. The voltage of potential source is V0=10 ...

Q: Two charges Qa=5 uc and Qb=8.5 uc are separated by a distance of 15 cm. Point P is located along the...

A:

Q: A beaker full of hot water is kept in a room. If it cools from 80°C to 75°C in t1 minutes, from 75°C...

A: C

Q: 110 J of heat is added to a gaseous system, whose internal energy increases by 40 J. Then the amount...

A: ∆Q=∆U+∆W ∆Q is the heat energy change ∆U is the internal energy change ∆W is the work done    

Q: David the shepherd boy faces Goliath the soldier in a battle. The only weapon David has is a slingsh...

A: Given :             Angle θ = 30°             Horizontal displacement x = 10 m             Vertical ...

Q: Describe three generational cohorts

A: To Find: Three generational cohorts .

Q: Suppose that k = 170 N/m . (Figure 1) Part A Determine the unstretched length of DB to hold the 40-k...

A:

Q: A system, after passing through different states returns back to its original state, is called _____...

A: Option

Q: A thick wire is suspended from a rigid support and no load is attached to its free end but the wire ...

A: A

Q: How much electrical energy is needed to bring two charges Q1= 5.5 x 10-7C and Q2= 1.7 x 10-6 C from ...

A: For a system of two charges posses energy named electric potential energy value of electrostatic pot...

Q: At room temperature, the rms speed of the molecules of a certain diatomic gas is found to be 1920ms-...

A: A

Q: PROBLEM 3: The figure below shows two tiny charged spheres q1 = +5 µC and q2 = -7.5 µC separated by ...

A: Given data, q1 = +5 micro coulombs q2 = -7.5 micro coulombs distance between q1 and q2 = 8 cm

Q: Advanced Physics Question

A:

Q: In the upper part of the atmosphere, the kinetic temperature of the air is of the order 1000K. There...

A: F

Q: Explain Newton's second Law and solve related problems Given a block which is at rest on a perfectly...

A: From the question: Given: Block's mass is 2 kg and acceleration is 5 m/s2

Q: One end of a string is attached to an object of mass M, and the other end of the string is secured s...

A: In the case of oscillation by simple pendulum, the expression for simple pendulum is given as follow...

Q: The steam supply to an engine comprises two streams which mix before entering the engine. One stream...

A: Solution:   Given Values,   w11=0.01 kg/sh11=2950 KJ/Kgv11=20 m/sw12=0.1 kg/sh12=2665 KJ/Kgv12=120 m...

Q: An automobile tire is rated to last 50000 miles.to an order magnitude, through how many revolutions ...

A:

Q: A faulty thermometer has its fixed points marked as 5° and 95°. The temperature of a body as measure...

A: A faulty thermometer has its fixed points marked as 5° and 95°. The temperature of a body as measure...

Q: A loop of wire is rotating around its vertical axis at an angular speed ω in a uniform magnetic fiel...

A: Introduction: Faraday’s law of induction is a basic law of electromagnetism that predicts how a magn...

Q: The temperature of gas is held constant, while its volume is decreased. The pressure exerted by the ...

A: C

Q: Stuck on this question for hours. Question in image. God bless & stay safe during these times  :...

A:

Q: If an ideal gas has a volume V at 27°C and it is heated at a constant pressure, so that its volume b...

A: B

Q: The effective length of the resonance chamber in an oboe (musical instrument) is 0.75 meters. The ob...

A: Given :     The effective length of the resonance chamber, L = 0.75 m a) Determine the frequency of ...

Q: A stretched rubber has ___________ a) Increased kinetic energy b) Increased potential energy c) Decr...

A: To find: What does a stretched rubber band have?  

Q: A person in good physical condition can put out 100 W of useful power for several hours at a stretch...

A: We know that one people produces an output of 100 W so the number of people that can produce 5 kW of...

Q: A gas does work during isothermal expansion. The source of mechanical energy so produced is the inte...

A: B

Q: Practice question

A: The instantaneous velocity is defined as the velocity at any given instantInstantaneous velocity is ...

Q: Twp cylinders of equal size are filled with equal amount of ideal diatomic gas at room temperature. ...

A: A

Q: A capacitor of capacitance 400 µF is charged so that the potential difference between its plates is ...

A:

Q: Out of solid, liquid and gas of the same mass and at the same temperature, which one has the least i...

A: Introduction: Internal energy is defined as the energy associated with the random, disordered motion...

Q: Motion of a liquid in a tube is best described by ___________ a) Bernoulli theorem b) Poiseuille’s e...

A: Option

Q: Calculate the molar heat capacities of the following gases: a. Helium ( molar mass= 4.00 g/mole) b. ...

A: Given: Molar mass of Helium=4.00 g/mole Molar mass of Hydrogen=1.00 g/mole Molar mass of Carbon Diox...

Q: A baseball with mass of 0.15 kg is batted into the air. Its initial speed is 29.8 m/s, directed at a...

A: According to Newton's second law, the acceleration of an object is directly proportional to the net ...

Q: vessel contains one mole of O2 gas at a temperature T. The pressure of the gas is P. An identical ve...

A: C

Q: An object of mass 0.2kg executes simple harmonic motion along the x-axis with a frequency of (25/π)H...

A: A

Q: Seawater contains approximately 3.5% salt by weight. How much seawater (in kg) contains 1 kg of salt...

A: Given  Percentage by weight of sea water = 3.5% Weight of salt = 1 kg Density of seawater d = 1030 k...

Q: 5. You figure the Radiation intensity without shielding is 78 mSv/h for a fellow CEDO's radiographic...

A: Concept used: HVL (half value layer) is the thickness at which value of intensity becomes 50% of its...

Q: part d and e please

A: The situation can be shown as below,

Q: Your heart continually pumps 5 gallons of blobd throughout your cardiovascular system. The blood mov...

A: Initially, the blood will exit from the heart while pumping. The speed of the blood while exiting be...

Q: R/Cv =0.67 for a gas. Then this gas is made up of which molecules? a) Diatomic b) Mixture of diatomi...

A: C

Q: A stretched rubber has ___________ a) Increased kinetic energy b) Increased potential energy c) Decr...

A: B