An object was released from rest at a certain height. It took the object 5 seconds to reach the ground. From what height was it released?

Q: (a) An aluminum power transmission line has a resistance of 0.0580 Ω / km . What is its mass per kil...

A: (a) The expression for the resistance of the wire will be, R=ρLAA=ρRL And, V=ALV=md Therefore, mass ...

Q: A toy car of mass m is pushed along a frictionless track so that it is moving at a speed v7. It hits...

A: Given: The speed of the car is 2.5 m/s. The mass of the car is 0.0505 kg. The spring constant is 605...

Q: (a) What is the current involved when a truck battery sets in motion 720 C of charge in 4.00 s while...

A: (a) Charge in motion of the truck battery (∆q)=720 C Time (∆t)=4 s

Q: In the shown system the masses are equal the horizontal plane is rough and the pulley is massless. A...

A:

Q: What value of inductance should be used if a 20.0 kΩ reactance is needed at a frequency of 500 Hz?

A: We know that here the reactance is given as 20.0 kΩ and value of frequency is given as 500 Hz  

Q: A factory worker pushes a 30.0-kg crate a distance of 4.5 m along a level floor at constantvelocity ...

A: Given data: Mass of crate is, m=30.0 kg. Distance moved is, s=4.5 m. Coefficient of kinetic friction...

Q: If objects X and Y attract each other, which of the following will be false?  a. X has positive char...

A:  If objects X and Y attract each other, which of the following will be false? 

Q: Electron guns are used in X-ray tubes. The electrons are accelerated through a relatively large volt...

A: Charge is given by,  Q=ne Current is given by,  I=Qt =net Given : Current I=0.500 mA  =0.500×10-3 A

Q: (a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate...

A:

Q: Which of the following is false? a. If the charge of one of the particles is doubled and that of the...

A:

Q: A metal sphere with radius of 9.0 cm at 30 °C is heated until the temperature of 100 °C. Determine t...

A: given:

Q: 3. Please write your opinion about the following statement and prove your opinion by giving an examp...

A: The angular momentum of particle is,  L=mvr The linear momentum is,  p=mv Since, angular momentum is...

Q: In a very simple circuit consisting of a battery and a capacitor with an adjustable distance between...

A: The capacitance is given by, C=ε0Ad Thus,                   C∝1d We can see that the capacitance is ...

Q: Charges in static electricity are typically in the nanocoulomb (nC) to microcoulomb ⎝µC⎞  range. Wha...

A: The electric potential at a distance r from the center of a metal sphere, at a point outside the sph...

Q: (a) A capacitor of 0.55 mF is charged to a voltage of 12 V. What is the magnitude of thecharge on ea...

A: Given: The capacitance of capacitor in first case is C1=0.55 mF. The voltage of capacitor in first c...

Q: When temperature increases the mean free time in a conductor Select one: O a. Oscillates O b. Increa...

A: Introduction: The mean free time of a conductor is the time between two successive collisions of an ...

Q: During normal beating, the heart creates a maximum 4.00-mV potential across 0.300 m of a person’s ch...

A: Potential, V = 4 mV  distance, d = 0.3 m  frequency, f = 1 Hz 

Q: Suppose a speck of dust in an electrostatic precipitator has 1.0000×1012 protons in it and has a net...

A: Calculate the number of charges. n=qqe=-5.0×10-9-1.6×10-19=3.125×1010    

Q: Find what heat in calories is required to change 50 gg of 0∘C∘C ice to steam at 100∘C∘C. The heat of...

A: heat from ice to water at 0°C =mL, where L=Latent heat of fusion of water Heat from 0°C to 100°C of ...

Q: An immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is rate...

A:

Q: A 0.7-F capacitor is connected in series with a 9-ohm resistor. If the connection is energized from ...

A: Voltage across the resistor is, VRt=εexp-tτ=εexp-tRC

Q: If a proton and an electron have the same kinetic energy, which has the longer de Broglie wavelength...

A: Proton and electro has same kinetic energy 

Q: For the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s a...

A: According to Einstein relation,  E=∆mc2 Change in mass is given by,  ∆m=3.0221+4.0834-6.1450+0.0087 ...

Q: You are loading a toy dart gun, which has two settings, the more powerful with the spring compressed...

A: Given: The work required for the lower setting is 5.0 J. The compression in the higher setting is tw...

Q: A typical AAA battery can move 2000 C of charge at 1.5 V.How long will this run a 50 mW LED?a. 1000 ...

A: The energy stored in battery is given by,  U=QV Substitute the given value to find the energy as,  U...

Q: An emf is induced by rotating a 1000-turn, 20.0 cm diameter coil in the Earth’s 5.00×10-5 T magnetic...

A: Formula of induced emf is as follows: ε=-N∆BA∆t                                                     ...

Q: An airplane flies between two points on the ground that are 500 km apart. The destination is directl...

A: horizontal distance = 500 Km speed of wind = 10 m/s due west speed of plane = 120 m/s along the hypo...

Q: You throw a ball with a mass of 0.40 kg against a brick wall. It hits the wall moving horizontally t...

A: Mass of the ball m=0.40 kg Before collision the velocity u=30 m/s After collision the velocity v=-20...

Q: can you solve all this please

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for you...

Q: A new design of Saturn 19 rocket with mass 1.11 x106 kg has a propulsion engine that can eject gases...

A:

Q: If steps are not taken to ground a gasoline pump, static electricity can be placed on gasoline when ...

A:

Q: help please

A: Base units are fundamental units, i.e. Kg, m, second etc... tanθ=Pb

Q: A prankster applies 450 V to an 80.0 µF capacitor and then tosses it to an unsuspecting victim. The ...

A: The capacitor stores energy in the form of charge. The energy released by the capacitor is used to r...

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –