Each of the Space Shuttle's solid rocket motors burns 680,400 kilograms of propellant in 2.5 minutes. How much propellant does each motor burn in 30 seconds?

Q: In the past, salmon would swim more than 1130 km (700 mi) to spawn at the headwaters of the Salmon…

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Q: Water flows over a section of Niagara Falls at a rate of 1500 kg/s and falls 75 m. How many 60-W…

A: Given: The rate of fall of water is 1500 kg/s. The height of the fall is 75 m. The power of the bulb…

Q: A 50 - meter rope with a mass of 30 kg is dangling over the edge of a cliff. Ignoring friction, how…

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Q: A ball has 1200J of energy. How much force was exerted through 0.65 m, so the ball would have that…

A: Given : Energy (E) = 1200 J Displacement (d) = 0.65 m

Q: A roller coaster features a near vertical drop of 150 meters. If the initial velocity was zero, the…

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Q: A microwave oven has a power requirement of 1,248 W. A frozen dinner requires 5.0 min to heat on…

A: Given: The power required to microwave is 1248 W. The time required to heat the frozen dinner is 5.0…

Q: How much joules of energy is needed to change the speed of a 1,900 kg sport utility vehicle from…

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Q: How much does the gravitational potential energy of a 1.2 kg object increase if you lift it upward…

A: Given: The mass of the object is 1.2 kg. The height from the ground is 30 cm.

Q: A 1,100 kg horse is walking at 3.0 m/s.   How much energy does the horse have?

A: Recall KE=12mv2 Where m= mass of object         v= speed of object

Q: At room temperature, an oxygen molecule, with a mass of 5.31x10^-26 kg typically has kenetic energy…

A: The expression for the kinetic energy of molecule is, KE=12mv2       (I)            m=mass of…

Q: What is the kinetic energy of a 25 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?

A: The formula for kinetic energy is given as follows:K=12mv2 K is the kinetic energy , m is the mass…

Q: A bullet has a mass of 0.0042kg. The muzzle velocity of the bullet coming out of the barrel of the…

A: The given data are listed below with appropriate variables. Here, m denotes the bullet’s mass and v…

Q: The box of a well-known breakfast cereal states that one ounce of the cereal contains 103 Calories…

A: The unit of energy can be converted from kilocalories to joule by multiplying with 4186 .   The…

Q: What is the kinetic energy of a 20 KG dog that is running at a speed of 8.2 m/s (about 18 mi/h)

A: m= 20 kg v= 8.2 m/s kinetic energy= K

Q: How much energy is required to move a 1300 ka ohiect from the Farth's surface to an altitude twice…

A: Write the given values of the problem- mass(m) m=1300 kg

Q: Two railroad cars, each of mass 5094kg and traveling 82.8km/h in opposite directions, collide…

A: Given speed of both car v= 82.8 km/h =23 m/s Mass of each car M= 5094 kg According to law of energy…

Q: The mass of a bald eagle is 6.3 kg. If the eagle is flying at a speed of 33.5 meters/seconds, what…

A: The relation of the kinetic energy is given in terms of mass and velocity Ek=12mv2

Q: If the escape speed of earth is 12km/s, what would be its mass in kg (write in 4 significant…

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Q: One ounce of a well-known breakfast cereal contains 99 Calories (1 food Calorie = 4186 J). If 2.4%…

A: In this case, 2.4 % of the potential energy converted. U=2.4%Q=0.024 Q   The expression for the…

Q: As you will learn, carbon-14 (14C) is an unstable isotope of carbon. It has the same chemical…

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Q: how much energy needed to kick a football of mass 500 gm with the velocity 72 km/hr

A: Given,        mass of the football = 500g =0.5 kg        velocity of foot ball = 72 km/hr…

Q: As we’ve seen, the sun’s energy comes from fusion reactions that combine four hydrogen atoms to…

A: As from the give data, four hydrogen atoms combine to produce a single helium atom.  The reaction is…

Q: If you have an object with a mass of 45.54 grams, and it is moving at a speed of 3.5 m/s, what is…

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Q: Which of the following statements are true? a) Energy can be created and destroyed b) Energy…

A: To find: The correct statement amongst the following.

Q: One watt is 1 joule per second. The woman in the preceding example expends 8.4 kilojoules per hour…

A: It is given that,

Q: 1. The speed at position A is 2 m/s II. Point B (local maximum) and Point C (local minimum) are both…

A: Introduction: 1) Potential Energy (P.E) : It is defined as the energy stored inside an object in…

Q: The weight of the elevator in an Adamson University building is 4000Newtons. A 20,000Watt motor…

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Q: A captain with a mass of 48kg climbs a set of stairs that are 5m high. How much gravitational…

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Q: An asteroid closely passes the Earth at a range of 17200 mi and relative speed of 7.8 km/s. The…

A: v=Velocity of asteroid=7.8 km/s=7800 m/sS=Specific gravity of asteroid=3ρw=Density of water=997…

Q: Two railroad cars, each of mass 5819kg and traveling 108km/h in opposite directions, collide head-on…

A: Mass of each car, m = M = 5819 kg Velocity, v = V = 108 km/h = 108×5/18 m/s = 30 m/s Thermal energy,…

Q: An object of mass 8 kg moving at a speed of 7 m/s collides with a ball of mass 9 kg moving in the…

A: Given: The intial speed of the 8 kg ball is 7 m/s. The initial speed of the 9 kg ball is 4 m/s in…

Q: What is the kinetic energy of a 27 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?

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Q: A high jumper of mass 60kg consumes a meal of 3.00 x 10³ kcal prior to a jump. If 3.3% of the energy…

A: Write the given values with the suitable variables. m=60 kgE=3×103 kcal=3×103 kcal×4186 J1…

Q: A car with a mass of 1250 kg is traveling at 40 m s -1. What is the kinetic energy in kJ? How much…

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Q: You place a mug with a mass of 2.5 kg on a table that's 36 in. above the ground, what is the mug's…

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Q: A fuel tank contains 25 × 1010 BTUs of energy. The fuel is converted into electrical energy in the…

A: Given:total energy of the fuel, E = 25×1010 BTU1 BTU = 1055.06 Jhence E = 25×1010×1055.06 J =…

Q: A 3.5 kg rock is at the top of a 37 m cliff. How much energy does the rock have?

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Q: One liter of gasoline at pump costs $1.2. One US gallon of E85 (85% ethanol + 15% gasoline by…

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Q: Large meteors sometimes strike the earth , converting most of their kinetic energy into thermal…

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Q: A wire has a resistance of 21.0 Ω. It is melted down, and from the same volume of metal a new wire…

A: Resistance of a wire is given as : ρ LA L2 = 3 x L1 Volume remains constant. V1 =V2 π r12L1 = π…

Q: 153 kilojoules [kJ] of energy are expended lifting a pile of bricks 50 feet [ft] into the air.…

A: energy (E) = 153 kJ height (h) = 50 ft

Q: An object is 5m high and has a mass of 2kg. How much PE will it have on moon where acceleration is 2…

A: 50 J

Q: A man weighing 73.4 kg is standing at the 4th floor of a building, which is 15 meters above the…

A: Mass of the person m=73.4 kg, height at which he is standing from the ground h=15 m and acceleration…

Q: A dieter is losing weight! After the first week on the diet she lost 5.5% of her initial weight. She…

A: Let us analyze the problem and mathematically model the situation. The given situation is that she…